研究者詳細 - 城田　千代栄

論文 - 城田　千代栄

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Long-term outcomes after revision of Kasai portoenterostomy for biliary atresia. 査読有り Open Access

Shirota C, Uchida H, Ono Y, Murase N, Tainaka T, Yokota K, Oshima K, Shirotsuki R, Hinoki A, Ando H

Journal of hepato-biliary-pancreatic sciences 23 巻 ( 11 ) 頁： 715-720 2016年11月

Laparoscopic Kasai portoenterostomy is advantageous over open Kasai portoenterostomy in subsequent liver transplantation 査読有り

Shirota, C; Murase, N; Tanaka, Y; Ogura, Y; Nakatochi, M; Kamei, H; Kurata, N; Hinoki, A; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Oshima, K; Uchida, H

SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 34 巻 ( 8 ) 頁： 3375 - 3381 2020年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Surgical Endoscopy

Background: Native liver survival after laparoscopic Kasai portoenterostomy (Lap-PE) for biliary atresia (BA) is controversial. We examined whether a jaundice-free native liver survival rate is comparable between conventional Kasai portoenterostomy (Open-PE) and Lap-PE. Then, the impact of the two types of PE on subsequent living-donor liver transplantation (LTx) was addressed in this study. Methods: The jaundice-free rate in 1- and 2-year-old patients who underwent Open-PE and Lap-PE from January 2006 to December 2017 was investigated. Additionally, perioperative data (duration from the start of surgery to the completion of hepatectomy and others) of patients aged 2 years or younger who underwent LTx after either Open-PE or Lap-PE from 2006 to 2017 were evaluated. Results: Thirty-one (67%) out of 46 Open-PE patients and 23 (77%) out of 30 Lap-PE patients showed native liver survival with jaundice-free status at 1 year of age (p = 0.384); 29 (63%) out of 46 Open-PE patients and 19 (70%) out of 27 Lap-PE patients showed native liver survival with jaundice-free status at 2 years of age (p = 0.524); there were no significant differences. Additionally, there were 37 LTx cases after PE within 2 years of birth, including 29 Open-PE and 8 Lap-PE cases. The patients in the Lap-PE group had fewer adhesions and significantly shorter durations of surgery up to the completion of the recipient’s hepatectomy and durations of post-LTx hospital stay compared to the Open-PE group. There were no differences in blood loss or duration of stay in intensive care unit between the Lap-PE and Open-PE groups. Conclusions: Jaundice-free native liver survival rate has been comparable between Open-PE and Lap-PE. Lap-PE resulted in fewer adhesions, contributing to better outcomes of subsequent LTx compared to Open-PE.

DOI： 10.1007/s00464-019-07108-y

Therapeutic strategy for thoracoscopic repair of esophageal atresia and its outcome 査読有り

Shirota, C; Tanaka, Y; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Oshima, K; Tanaka, T; Tani, Y; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 35 巻 ( 10 ) 頁： 1071 - 1076 2019年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Thoracoscopic repair can be safely performed in most types of congenital esophageal atresia (EA), including in patients with long gap EA or very low birth weight. Accordingly, we performed single- or multistage thoracoscopic repair for various EA types. We aimed to report our therapeutic strategy for thoracoscopic radical surgery for treating EA and its outcome. Methods: Outcomes of radical surgeries for treating congenital EA at our institute from 2013 to 2018 were retrospectively evaluated. Results: Thirty-eight radical surgeries were evaluated: 3 Gross type-A, 1 type-B, 30 type-C, 1 type-D, and 3 type-E. The cervical approach was performed in 5 cases and thoracoscopic esophageal anastomosis in 33, including 26 single-stage (all type-C) and 7 multistage surgeries (3 type-A, 3 type-C, and 1 type-D). There were no cases of thoracotomies or intraoperative thoracoscopic surgery complications. Three cases of minor leakage were conservatively resolved. Three postoperative chylothorax surgeries (9%) and seven balloon dilatations (21%) for anastomotic stenosis were performed. Conclusion: Thoracoscopic radical surgery for treating EA, including single- and multistage procedures, can be performed, except in type-E cases or when the end of the proximal esophagus is located higher than the clavicle.

DOI： 10.1007/s00383-019-04541-x

Single-incision laparoscopic percutaneous extraperitoneal closure (SILPEC) for inguinal hernia with prolapsed ovary 査読有り

Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Amano, H; Okamoto, M; Takimoto, A; Yasui, A; Nakagawa, Y; Hinoki, A; Uchida, H

SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 36 巻 ( 6 ) 頁： 4328 - 4332 2022年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Surgical Endoscopy

Background: Most studies reporting the outcomes of laparoscopic ovarian prolapsed hernia operations with large sample sizes are based on intracorporeal closure, while studies on extraperitoneal closure have limited sample sizes. We proactively used the single-incision laparoscopic percutaneous extraperitoneal closure (SILPEC) technique and obtained favorable outcomes, which we report in this paper. Methods: We retrospectively reviewed patients who had undergone laparoscopic surgery for inguinal hernia at our institution. They were retrospectively classified into two groups based on the pre- or intraoperative diagnosis of hernia with a prolapsed ovary, namely the prolapse group and the non-prolapse group, respectively. The data were statistically analyzed and p < 0.05 was considered statistically significant. Results: A total of 771 subjects underwent SILPEC during the study period, including 400 girls. Among them, 63 girls were diagnosed with an ovarian prolapsed hernia. SILPEC was successfully performed through a single port in all cases, with a single exception, in whom the forceps was inserted directly through the right lower quadrant to pull up the ovary. The duration of surgery in the prolapse group was not higher than that in the non-prolapse group. During the SILPEC surgery, the ovaries were successfully reverted into the abdominal cavity by external compression of the inguinal area alone in 38 of the 63 patients. In the remaining 25 cases, the ovaries were reverted into the abdominal cavity by external compression of the inguinal area and traction of the round ligament with forceps. None of these cases failed to return to the ovaries. Conclusion: Our study results indicate that SILPEC may be performed safely for the treatment of ovarian prolapsed inguinal hernia. Since the ovary and fallopian tube are close to the internal inguinal ring due to the short round ligament, the procedure requires careful suturing with traction of the round ligament.

DOI： 10.1007/s00464-021-08777-4

Double-balloon endoscopic retrograde cholangiography can make a reliable diagnosis and good prognosis for postoperative complications of congenital biliary dilatation 査読有り Open Access

Shirota, C; Kawashima, H; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Amano, H; Takimoto, A; Hinoki, A; Uchida, H

SCIENTIFIC REPORTS 11 巻 ( 1 ) 頁： 11052 2021年5月

記述言語：英語出版者・発行元：Scientific Reports

Bile duct and anastomotic strictures and intrahepatic stones are common postoperative complications of congenital biliary dilatation (CBD). We performed double-balloon endoscopic retrograde cholangiography (DBERC) for diagnostic and therapeutic purposes after radical surgery. We focused on the effectiveness of DBERC for the treatment of postoperative complications of CBD patients. Bile duct and anastomotic strictures and intrahepatic stones are common postoperative complications of congenital biliary dilatation (CBD). We performed double-balloon endoscopic retrograde cholangiography (DBERC) for diagnostic and therapeutic purposes after radical surgery. We focused on the effectiveness of DBERC for the treatment of postoperative complications of CBD patients. This retrospective study included 28 patients who underwent DBERC (44 procedures) after radical surgery for CBD between January 2011 and December 2019. Strictures were diagnosed as “bile duct strictures” if endoscopy confirmed the presence of bile duct mucosa between the stenotic and anastomotic regions, and as “anastomotic strictures” if the mucosa was absent. The median patient age was 4 (range 0–67) years at the time of primary surgery for CBD and 27.5 (range 8–76) years at the time of DBERC. All anastomotic strictures could be treated with only by 1–2 courses of balloon dilatation of DBERC, while many bile duct strictures (41.2%) needed ≥ 3 treatments, especially those who underwent operative bile duct plasty as the first treatment (83.3%). Although the study was limited by the short follow-up period after DBERC treatment, DBERC is recommended as the first-line treatment for hepatolithiasis associated with biliary and anastomotic strictures in CBD patients, and it can be safely performed multiple times.

DOI： 10.1038/s41598-021-90550-7

Multicenter, retrospective, comparative study of laparoscopic and open Kasai portoenterostomy in children with biliary atresia from Japanese high-volume centers 査読有り Open Access

Murase, N; Hinoki, A; Shirota, C; Tomita, H; Shimojima, N; Sasaki, H; Nio, M; Tahara, K; Kanamori, Y; Shinkai, M; Yamamoto, H; Sugawara, Y; Hibi, T; Ishimaru, T; Kawashima, H; Koga, H; Yamataka, A; Uchida, H

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 26 巻 ( 1 ) 頁： 43 - 50 2019年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Hepato Biliary Pancreatic Sciences

Background: Multicenter study was undertaken to analyze the results of laparoscopic and open Kasai portoenterostomy. Methods: Subjects were infants with type III biliary atresia who underwent open operation (n = 106) or laparoscopic operation (n = 21) between January 2012 and December 2015. Clinical data were compared between open and laparoscopic operations (2016-0534). Propensity score matching was performed to reduce the effect of treatment selection bias. Multivariate analyses were used to estimate the effect of the surgical approach on the jaundice clearance rate and the native liver survival rate. Results: The postoperative jaundice clearance rate and the 1-year native liver survival rate were not significantly different between open and laparoscopic operations. Rates of cholangitis and major complications of laparoscopic operation were comparable to those of open operation. Blood loss, time to resume oral intake, time to drain removal, and duration of analgesic usage of laparoscopic operation were significantly superior to those of open operation. Similar results were observed when analysis was adjusted based on propensity score. Multivariate analyses demonstrated that only age at operation was a poor prognostic factor. Conclusion: Laparoscopic Kasai portoenterostomy was associated with several favorable perioperative outcomes compared with open Kasai portoenterostomy. The difference of surgical approach was not a significant independent predictor.

DOI： 10.1002/jhbp.594

Usefulness of fetal magnetic resonance imaging for postnatal management of congenital lung cysts: prediction of probability for emergency surgery 査読有り Open Access

Shirota, C; Tainaka, T; Nakane, T; Tanaka, Y; Hinoki, A; Sumida, W; Murase, N; Oshima, K; Chiba, K; Shirotsuki, R; Uchida, H

BMC PEDIATRICS 18 巻 ( 1 ) 頁： 105 2018年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：BMC Pediatrics

Background: Emergency rescue lung resection is rarely performed to treat congenital lung cysts (CLCs) in neonates. Many reports have described fetal CLC treatment; however, prenatal predictors for postnatal respiratory failure have not been characterized. We hypothesized that fetal imaging findings are useful predictors of emergency surgery. Methods: We retrospectively studied patients with CLC who underwent lung surgery during the neonatal period in our hospital between January 2001 and December 2015. The demographic data, fetal imaging findings, and intra- and postoperative courses of patients who underwent emergency surgery (Em group) were compared with those of patients who received elective surgery, i.e., non-emergency surgery (Ne group). Results: The Em group and Ne group included 7 and 11 patients, respectively. No significant difference was noted in gestational age, time at prenatal diagnosis, birth weight, and body weight at surgery. The volumes of contralateral lung per thoracic volume were significantly smaller in the Em group than in the Ne group (p = 0.0188). Mediastinal compression was more common in the Em group (7/7) than in the Ne group (4/11) (p = 0.0128). Conclusions: This is the report describing neonatal emergency lobectomy in patients with CLC evaluated by fetal MRI using the lung volume ratio and mediastinal shift. In patients with CLC, mediastinal shift and significant decreases in contralateral lung volumes during the fetal stages are good prenatal predictors of postnatal emergency lung resection.

DOI： 10.1186/s12887-018-1085-z

Laparoscopic resection of neuroblastomas in low-to high-risk patients without image-defined risk factors is safe and feasible 査読有り Open Access

Shirota, C; Tainaka, T; Uchida, H; Hinoki, A; Chiba, K; Tanaka, Y

BMC PEDIATRICS 17 巻 ( 1 ) 頁： 71 2017年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：BMC Pediatrics

Background: Several studies have reported that minimally invasive surgery (MIS) might be considered for resecting neuroblastomas without image-defined risk factors (IDRFs); however, there are no studies comparing the outcomes of laparotomy and laparoscopy in IDRF-negative patients. Thus, we investigated the feasibility of laparoscopic surgery and compared the two abovementioned approaches. Methods: To compare the effects of laparotomy with those of laparoscopy in patients with neuroblastomas without IDRFs, the following items were retrospectively compared: largest tumor dimension, volume of blood loss, time required to initiate postoperative feeding, locoregional recurrence rate, survival, etc. Results: Nine patients without IDRFs (three at low-to-medium risk and six at high risk) underwent laparotomy, and seven patients without IDRFs (two at low-to-medium risk and five at high risk) underwent laparoscopy. Median duration of surgery was 221 (130-304) and 172 (122-253) min in the laparotomy and laparoscopy groups, respectively, showing no significant difference. Median postoperative time required for resuming meal consumption was significantly longer in the laparotomy (4 days; 2-5) group than that in the laparoscopy group (3 days; 2-3; p = 0.023). Median blood loss was significantly higher in the laparotomy group (5 ml/Kg;2.6-16) than that in the laparoscopy group (2.1 ml/Kg;0.1-4.0; P = 0.037). Median follow-up period was 81 (52-94) and 21 (17-28) months, locoregional recurrence rates were 22 and 0% at 1 year, 1-year progression-free survival rates were 78 and 100%, and overall survival rates were 67 and 100% in the laparotomy and laparoscopy groups, respectively, with no significant differences. Conclusions: MIS for the treatment of neuroblastomas without IDRFs in low- to high-risk patients is safe and feasible and does not compromise the treatment outcome.

DOI： 10.1186/s12887-017-0826-8

Prolonged survival of porcine hepatocytes in cynomolgus monkeys. 査読有り Open Access

Nagata H, Nishitai R, Shirota C, Zhang JL, Koch CA, Cai J, Awwad M, Schuurman HJ, Christians U, Abe M, Baranowska-Kortylewicz J, Platt JL, Fox IJ

Gastroenterology 132 巻 ( 1 ) 頁： 321-9 2007年1月

New Navigation Surgery for Resection of Lymphatic Malformations Using Indocyanine Green Fluorescence Imaging. 査読有り

Shirota C, Hinoki A, Takahashi M, Tanaka Y, Tainaka T, Sumida W, Murase N, Oshima K, Shirotsuki R, Chiba K, Morimoto Y, Uchida H

The American journal of case reports 18 巻頁： 529 - 531 2017年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：American Journal of Case Reports

Objective: Unusual or unexpected effect of treatment Background: We used indocyanine green (ICG) fluorescence imaging to completely resect lymphatic malformations (LMs). This is the first report of navigation surgery utilizing ICG fluorescence imaging for resection of LMs. Case Report: A 15-year-old boy was diagnosed with LMs in the abdominal wall. The extent of the tumor was determined by an ultrasound, and ICG (Diagnogreen®, Daiichi-Sankyo Pharma, Tokyo, Japan) was injected subcutaneously and intradermally into the core and 2 marginal regions of the tumor (3 injections in total), respectively. During surgery, the extent of the tumor was confirmed with a photodynamic eye, and the tumor was completely resected. A fluorescent portion macroscopically estimated as normal was additionally resected and no residual fluorescence or tumor were confirmed in the remaining tissue. Abnormal lymphatic vessels were histopathologically observed in the additionally resected tissue, indicating the invasion of LMs. The surgery had a good outcome with no evidence of recurrence. Conclusions: We performed near-infrared fluorescence-guided imaging surgery for the resection of LMs in the abdominal wall. This is a single case study; therefore, assessment of more cases is warranted for further validation. This procedure could provide significant benefit to patients requiring resection of LMs.

DOI： 10.12659/ajcr.903465

Route of hepatocyte delivery affects hepatocyte engraftment in the spleen. 査読有り

Nagata H, Ito M, Shirota C, Edge A, McCowan TC, Fox IJ

Transplantation 76 巻 ( 4 ) 頁： 732-4 2003年8月

Late postoperative complications of congenital biliary dilatation in pediatric patients: a single-center experience of managing complications for over 20 years Open Access

Amano, H; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Takimoto, A; Tanaka, Y; Hinoki, A; Kawashima, H; Uchida, H

SURGERY TODAY 51 巻 ( 9 ) 頁： 1488 - 1495 2021年9月

記述言語：英語出版者・発行元：Surgery Today

Purpose: To investigate late complications after surgery for congenital biliary dilatation (CBD). Methods: We retrospectively reviewed the patients treated for late postoperative complications of extrahepatic bile duct resection with bilioenteric anastomosis for CBD at our hospital between 1999 and 2019. Results: Twenty-seven complications, including bile duct stenosis with (n = 19) or without (n = 3) hepatolithiasis, remnant intrapancreatic bile duct (n = 2), intestinal obstruction (n = 2), and refractory cholangitis (n = 1) were treated in 26 patients. The median age at radical surgery and the initial treatment of complications was 3 years, 2 months and 14 years, 5 months, respectively. The median period from radical surgery to initial treatment of complications was 7 years, 1 month. Before 2013, bile duct stenosis was initially treated with bile duct plasty (n = 11) or hepatectomy (n = 3), and 71.4% (n = 10) of patients needed further treatment; after 2013, double-balloon endoscopic retrograde cholangiography (DBERC) was used (n = 8), and 25% (n = 2) of patients needed further treatment. Patients with remnant intrapancreatic bile duct, intestinal obstruction, and refractory cholangitis required surgery. Conclusion: Long-term follow-up is necessary after surgery for congenital biliary dilatation. DBERC is thus considered to be useful for bile duct stenosis management.

DOI： 10.1007/s00595-021-02238-0

手術経験数による腹腔鏡下胆道閉鎖症手術成績の検討査読有り Open Access

藏野結衣, 城田千代栄, 檜顕成, 田井中貴久, 住田亙, 横田一樹, 牧田智, 滝本愛太朗, 内田広夫

日本小児外科学会雑誌 57 巻 ( 3 ) 頁： 596 - 599 2021年4月

記述言語：日本語出版者・発行元：特定非営利活動法人日本小児外科学会

<p>【目的】腹腔鏡下胆道閉鎖症手術（腹腔鏡下肝門部空腸吻合術）の執刀を熟練した術者に限定する必要性の有無を明らかにすることを目的として，自施設での治療成績を後方視的に検討した．</p><p>【方法】2014年4月から2018年8月の期間中，胆道閉鎖症に対して当院で腹腔鏡下肝門部空腸吻合術を施行した35例を対象とした．腹腔鏡下肝門部空腸吻合術を5例以上経験した術者が執刀した患者（A群：12例）と執刀経験4例以下の術者が執刀した患者（B群：23例）とに分類し，手術，術後経過と術後6か月，1年，2年の各時点における無黄疸自己肝生存についてそれぞれ統計学的解析を行い比較，検討した．</p><p>【結果】A群とB群で手術日齢，体重，出血量，ドレーン抜去時期，経口開始時期に有意差は認められなかったが，手術時間はA群が有意に短かった（<i>p</i>＝0.0049）．無黄疸自己肝生存率は術後6か月（A群58.3％，B群60.9％，<i>p</i>＝0.506），術後1年（A群66.7％，B群65.2％，<i>p</i>＝0.932），術後2年（A群58.3％，B群56.5％，<i>p</i>＝0.918）でいずれの時点でも有意差は認められなかった．</p><p>【結論】今回の検討では，腹腔鏡下胆道閉鎖症手術に熟練した術者の指導の下では，執刀経験量による減黄率の有意な差は認められなかった．</p>

DOI： 10.11164/jjsps.57.3_596

Biodegradable Surgical Staple Composed of Magnesium Alloy 査読有り Open Access

Amano, H; Hanada, K; Hinoki, A; Tainaka, T; Shirota, C; Sumida, W; Yokota, K; Murase, N; Oshima, K; Chiba, K; Tanaka, Y; Uchida, H

SCIENTIFIC REPORTS 9 巻 ( 1 ) 頁： 14671 2019年10月

記述言語：英語出版者・発行元：Scientific Reports

Currently, surgical staples are composed of non–biodegradable titanium (Ti) that can cause allergic reactions and interfere with imaging. This paper proposes a novel biodegradable magnesium (Mg) alloy staple and discusses analyses conducted to evaluate its safety and feasibility. Specifically, finite element analysis revealed that the proposed staple has a suitable stress distribution while stapling and maintaining closure. Further, an immersion test using artificial intestinal juice produced satisfactory biodegradable behavior, mechanical durability, and biocompatibility in vitro. Hydrogen resulting from rapid corrosion of Mg was observed in small quantities only in the first week of immersion, and most staples maintained their shapes until at least the fourth week. Further, the tensile force was maintained for more than a week and was reduced to approximately one-half by the fourth week. In addition, the Mg concentration of the intestinal artificial juice was at a low cytotoxic level. In porcine intestinal anastomoses, the Mg alloy staples caused neither technical failure nor such complications as anastomotic leakage, hematoma, or adhesion. No necrosis or serious inflammation reaction was histopathologically recognized. Thus, the proposed Mg alloy staple offers a promising alternative to Ti alloy staples.

DOI： 10.1038/s41598-019-51123-x

Novel thoracoscopic navigation surgery for neonatal chylothorax using indocyanine-green fluorescent lymphography

Shirotsuki, R; Uchida, H; Tanaka, Y; Shirota, C; Yokota, K; Murase, N; Hinoki, A; Oshima, K; Chiba, K; Sumida, W; Hayakawa, M; Tainaka, T

JOURNAL OF PEDIATRIC SURGERY 53 巻 ( 6 ) 頁： 1246 - 1249 2018年6月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Background: Postoperative chylothorax after surgery for esophageal atresia/tracheoesophageal fistula (TEF) is a rare but serious complication, especially in neonates. This study aimed to identify the thoracic duct and ligate chylous leakage sites, using thoracoscopic navigation of an indocyanine-green (ICG)-based near-infrared (NIR) fluorescence imaging system. Methods: From November 2014 to April 2017, thoracoscopic intraoperative ICG-NIR imaging was performed in 10 newborns (11 surgeries) with first TEF operation or with persistent postoperative chylothorax after TEF operation. NIR imaging was performed 1 h after an inter-toe injection of ICG. Thoracoscopic ligations against the NIR-detected leakage sites were performed with sutures. Results: The thoracic duct or lymphatic leakage was directly visualized in each patient. In 8 surgeries with first thoracoscopic TEF operation, one case had suspected minor chylous leakage without postoperative chylothorax. Another case with no chylous leakage at the first operation resulted in chylothorax at postoperative day 11. In three neonates with postoperative chylothorax, leakage points were detected near the ablation site of the azygos vein during the first operation. These points were properly ligated, and postoperative chylous leakage ceased with no adverse events. Conclusions: Thoracoscopic ICG-NIR imaging encourages the repair of refractory chylothorax and seems reliable. Level of Evidence: IV

DOI： 10.1016/j.jpedsurg.2018.01.019

Initial treatment of septated parapneumonic empyema with drainage plus fibrinolytic agents is equally effective as video-assisted thoracoscopic surgery, and is suitable as first-line therapy. 査読有り

Shirota C, Uchida H

Translational pediatrics 4 巻 ( 1 ) 頁： 41-4 2015年1月

NOVEL BIOMARKER DISCOVERY FOR CHILDHOOD RHABDOMYOSARCOMA USING URINARY METABOLITES

Amano, H; Hinoki, A; Uchida, H; Yokota, K; Ishigaki, T; Sakairi, M; Abe, M; Terui, Y; Oda, H; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Takimoto, A; Kano, Y; Okamoto, M; Yasui, A; Nakagawa, Y

PEDIATRIC BLOOD & CANCER 68 巻頁： S46 - S46 2021年6月

Identification of novel neuroblastoma biomarkers in urine samples Open Access

Yokota, K; Uchida, H; Sakairi, M; Abe, M; Tanaka, Y; Tainaka, T; Shirota, C; Sumida, W; Oshima, K; Makita, S; Amano, H; Hinoki, A

SCIENTIFIC REPORTS 11 巻 ( 1 ) 頁： 4055 2021年2月

記述言語：英語出版者・発行元：Scientific Reports

Urine is a complex liquid containing numerous small molecular metabolites. The ability to non-invasively test for cancer biomarkers in urine is especially beneficial for screening child patients. This study attempted to identify neuroblastoma biomarkers by comprehensively analysing urinary metabolite samples from children. A total of 87 urine samples were collected from 54 participants (15 children with neuroblastoma and 39 without cancer) and used to perform a comprehensive analysis. Urine metabolites were extracted using liquid chromatography/mass spectrometry and analysed by Metabolon, Inc. Biomarker candidates were extracted using the Wilcoxon rank sum test, random forest method (RF), and orthogonal partial least squares discriminant analysis (OPLS-DA). RF identified three important metabolic pathways in 15 samples from children with neuroblastoma. One metabolite was selected from each of the three identified pathways and combined to create a biomarker candidate (3-MTS, CTN, and COR) that represented each of the three pathways; using this candidate, all 15 cases were accurately distinguishable from the control group. Two cases in which known biomarkers were negative tested positive using this new biomarker. Furthermore, the predictive value did not decrease in cases with a low therapeutic effect. This approach could be effectively applied to identify biomarkers for other cancer types.

DOI： 10.1038/s41598-021-83619-w

Effect of General Anesthesia on Liver and Spleen Stiffness for Predicting High-Risk Varices in Biliary Atresia Open Access

Yokoyama, S; Honda, T; Ishizu, Y; Imai, N; Ito, T; Yamamoto, K; Shirota, C; Tainaka, T; Makita, S; Nakamura, M; Uchida, H; Kawashima, H

HEPATOLOGY RESEARCH 56 巻 ( 2 ) 頁： 223 - 232 2026年2月

記述言語：英語出版者・発行元：Hepatology Research

Aim: Liver and spleen stiffness (LS and SS) measurements in predicting high risk varices (HRVs) are reported useful in biliary atresia (BA). In children, inability to temporarily hold their breath may pose challenges in obtaining accurate measurements. This cross-sectional prospective study aimed to evaluate the diagnostic accuracy of LS and SS measurements obtained under general anesthesia during brief pauses in ventilation compared with those obtained in the awake state, in predicting HRVs. Methods: Among patients with BA aged 15 years or younger who underwent esophagogastroduodenoscopy under general anesthesia for evaluation of varices, 43 patients with LS and SS measured both in the awake and anaesthetized states were enrolled. HRVs were defined as large esophagogastric varices or esophagogastric varices of any size with red color signs. Results: The median age was 4 years. Nineteen patients had HRVs. In the HRVs group compared with the non-HRVs group, awake-LS, awake-SS, anesthesia-LS, and anesthesia-SS were significantly higher: 2.23 versus 1.71, 4.40 versus 3.45, 2.56 versus 1.73, and 4.13 versus 3.62 m/s, respectively. The area under the curve for awake-LS, awake-SS, anesthesia-LS, and anesthesia-SS were 0.784, 0.794, 0.814, and 0.698, respectively. Awake-LS and anesthesia-LS showed a strong positive correlation (ρ = 0.894), whereas awake-SS and anesthesia-SS showed a weak correlation (ρ = 0.468). Conclusions: As anesthetics and mechanical ventilation affect abdominal hemodynamics, SS measurements obtained under general anesthesia deviated from those obtained during the awake state. Further research is needed to determine whether mild sedation could help optimize measurement conditions. Trial Registration: This study was registered on the University Hospital Medical Information Network (UMIN000033123).

DOI： 10.1111/hepr.70049

The First Case of Bile Duct Resection Using the da Vinci SP for Congenital Biliary Dilatation in an Infant

Makita, S; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Amano, H; Ogawa, K; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Hayashi, K; Nakagawa, Y; Kato, D; Ishii, H; Asai, H; Ota, K; Murata, Y; Liu, JH; Guo, YH

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 19 巻 ( 1 ) 頁： e70246 2026年1月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

We report the first infant case of congenital biliary dilatation (CBD) treated using the da Vinci SP system. A 4-month-old boy (7.9 kg) with Todani type IV-A CBD underwent complete extrahepatic bile duct excision, hilar bile duct plasty, and hepaticojejunostomy through a 2.7-cm umbilical incision with an additional 3-mm assistant port. Operative time was 343 min with minimal blood loss. Recovery was uneventful, and the patient was discharged on postoperative day 7. This case demonstrates the feasibility of SP-assisted minimally invasive surgery in small infants.

DOI： 10.1111/ases.70246

Response to the Comment on "Long-Term Outcomes of Congenital Biliary Dilatation Surgery: A Single-Center Study Highlighting the High Incidence of Complications Within 5 Years"

Maeda, T; Uchida, H; Shirota, C

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2026年1月

Hyponatremia after pediatric surgery: Randomized trial of fluid composition on antidiuretic hormone response Open Access

Yokota, K; Uchida, H; Manaka, K; Nangaku, M; Kuwatsuka, Y; Ando, M; Nishiwaki, K; Hirai, T; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Amano, H; Hinoki, A

PEDIATRIC RESEARCH 99 巻 ( 1 ) 頁： 263 - 269 2026年1月

記述言語：英語出版者・発行元：Pediatric Research

Background: We examined the underlying mechanisms of whether hyponatremia could be induced by hypotonic solution administration after the postoperative invasive phase (POIP). Methods: We included patients who had undergone surgery with expected oral feeding resumption after postoperative day (POD) 3. In this open-label, randomized controlled trial, 100 patients were assigned to three groups by sodium concentrations ([Na]) used for maintenance infusions: 136 mEq/L (ISO) (n = 34), 68 mEq/L (HYPO) (n = 33), and 34 mEq/L (exHYPO) (n = 33). Potassium (20 mEq/L) and glucose (60 g/L) were added to each infusion. Ringer’s solution was used in all groups for the first 12 h postoperatively, then switched to a maintenance solution. Blood samples were drawn and evaluated on POD 3. Results: Hyponatremia frequencies on POD 3 were 3.6, 18, and 39% in the ISO, HYPO, and exHYPO groups, respectively, with a significant difference between the ISO and exHYPO groups. Additionally, 90% of the patients still had excessive antidiuretic hormone (ADH) secretion on POD 3. There were no remarkable adverse events. Conclusion: The persistence of surgical stress-induced ADH secretion until POD 3 suggested that hyponatremia was induced by exHYPO administration. However, using Ringer’s solution during the POIP might prevent hyponatremia in HYPO patients. Registration number: UMIN000029057 (https://www.umin.ac.jp/ctr/index.htm). Date of first registration: 01/11/2017 Impact: After the postoperative invasive phase, non-osmotic antidiuretic hormone (ADH) secretion due to surgical stress persisted, resulting in an excess ADH state for at least 3 postoperative days (PODs). Administration of extremely hypotonic electrolyte infusions under such circumstances might induce hyponatremia. Adequate extracellular fluid administration during the invasive phase after major pediatric laparoscopic surgery did not cause further increases in ADH secretion or hyponatremia, even for HYPO maintenance fluid.

DOI： 10.1038/s41390-025-04124-8

Strategy of reduced port gastrostomy as a safe procedure for paediatric patients Open Access

Gohda, Y; Uchida, H; Tainaka, T; Sumida, W; Shirota, C; Makita, S; Satomi, M; Yasui, A; Kato, D; Maeda, T; Ishii, H; Ota, K; Guo, YH; Liu, JH; Hinoki, A

JOURNAL OF MINIMAL ACCESS SURGERY 22 巻 ( 1 ) 頁： 22 - 26 2026年1月

記述言語：英語出版者・発行元：Journal of Minimal Access Surgery

Background: Laparoscopic gastrostomy has improved surgical and cosmetic outcomes. Our approach involves a strategy of reduced port surgery, wherein only the umbilicus and tube insertion site were incised, with an additional port inserted if manipulation is difficult. This study aimed to investigate the outcomes of our reduced port gastrostomy strategy. Patients and Methods: The paediatric patients who underwent gastrostomy at our institution from July 2013 to March 2023 were reviewed retrospectively. Surgical outcomes were compared between patients who underwent reduced port gastrostomy and those who underwent multiport gastrostomy with or without fundoplication. Results: Of the 78 patients who underwent gastrostomy, 25 and 39 patients who underwent reduced port gastrostomy and multiport gastrostomy with or without fundoplication, respectively, were included. Five patients who underwent reduced port gastrostomy required an additional port. The operative time during gastrostomy was shorter in the multiport gastrostomy group (21.3 min vs. 17.2 min, P = 0.00). One splenic injury in the reduced port gastrostomy group and one split of the stomach in the multiport gastrostomy group occurred and were completely repaired intraoperatively. No patient required reoperation within 30 days after gastrostomy. Post-operative complications, such as infection with pus (1 vs. 2, P = 1.00), external leakage requiring nutritional management change or tube replacement (2 vs. 2, P = 0.64) and tube dislodgement (1 vs. 0, P = 0.39), were similar between the two groups. Conclusions: The strategy of reduced port gastrostomy was safe and cosmetically favourable compared with multiport gastrostomy.

DOI： 10.4103/jmas.jmas_218_24

Development of an AI-based system for vagus nerve recognition during thoracoscopic esophageal atresia repair: Based on the comparison with pediatric surgeon Open Access

Yasui A., Hayashi Y., Hinoki A., Amano H., Shirota C., Tainaka T., Makita S., Takimoto A., Mori K., Uchida H.

Asian Journal of Surgery 2026年

出版者・発行元：Asian Journal of Surgery

Background/objective: This study aimed to develop an artificial intelligence (AI) model for recognizing the vagus nerve in thoracoscopic esophageal atresia (EA) surgery and conduct a comparative study with pediatric surgeons to demonstrate its potential practical utility. Methods: We established a training dataset by annotating images from thoracoscopic EA surgery. Using this dataset, we developed an AI model to automatically recognize the vagus nerve. The Dice coefficient was used as the objective metrics following four-fold cross-validation. We included 54 pediatric surgeons in the comparative study. Based on clinical experience, pediatric surgeons were categorized into 10 experts and 44 novices. We compared the speed of vagus nerve recognition between the AI model and surgeons using 14 test videos created from EA cases not included in the training dataset. Subsequently, participants rated the accuracy and utility of the AI model using a five-point Likert scale. Results: We annotated 9514 images extracted from 36 cases and used them as training data. The mean Dice coefficient of the vagus nerve was 0.501. The AI model recognized the vagus nerve significantly faster than the Novice group (median: 252 frames, interquartile range [IQR]: 129–538] vs. 661 frames, IQR: 340–1229; p = 0.001), with no significant difference with the Expert group (252 frames, IQR: 129–538 vs. 419 frames, IQR 242–827; p = 0.159). Regarding recognition accuracy, the experts gave a high average rating of 4.5 points. Conclusion: We have developed an AI model for vagus nerve recognition with potentially comparable accuracy to expert pediatric surgeons.

DOI： 10.1016/j.asjsur.2026.01.004

One-stage minimally invasive surgery is as safe and feasible as two-stage surgery for perforated choledochal cyst in pediatric patients who are hemodynamically stable

Tainaka, T; Shirota, C; Makita, S; Amano, H; Kano, Y; Yasui, A; Nakagawa, Y; Kato, D; Maeda, T; Ishii, H; Murata, Y; Utsunomiya, A; Hinoki, A; Uchida, H

SURGERY TODAY 2025年12月

記述言語：英語出版者・発行元：Surgery Today

To contribute to the evolving evidence guiding the optimal management of perforated choledochal cyst (PCC), a rare but serious complication of choledochal cyst. We reviewed data from 10 patients with PCC treated at our institution between 2004 and 2024. The patients were categorized into a two-stage (n = 5) group and a one-stage group (n = 5). Surgical outcomes, postoperative complications, and length of hospital stay were compared. The operative time was significantly longer in the one-stage group than in the two-stage group (353 min vs. 282 min, respectively; p = 0.006), whereas blood loss was comparable between the groups. Open surgery was more frequent in the two-stage group than the one-stage group (80% vs. 0%; p = 0.048). Early complications occurred in 40% and 20% of the patients in the two-stage and one-stage groups, respectively (p = 1.000). Anastomotic leakage occurred in one patient from each group. The hospital stay was significantly longer in the two-stage group than in the one-stage group. The late complication incidence did not differ significantly between the groups. Our findings suggest that one-stage surgery is a safe and effective option for PCC in patients who are clinically stable and when performed by experienced surgeons. These findings may assist in the management of PCC.

DOI： 10.1007/s00595-025-03203-x

Comparison of Postoperative Outcomes of Open, Laparoscopic, and Robotic Surgery for Pediatric Choledochal Cyst Excision

Maeda, T; Uchida, H; Shirota, C; Tainaka, T; Makita, S; Yasui, A; Kato, D; Ishii, H; Asai, H; Utsunomiya, A

JOURNAL OF PEDIATRIC SURGERY 60 巻 ( 12 ) 頁： 162642 2025年12月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Background: Choledochal cyst is treated with extrahepatic bile duct resection and hepaticojejunostomy. Minimally invasive approaches, including laparoscopic surgery (LS) and robotic surgery (RS), offer potential advantages over open surgery (OS), but their impact on perioperative and short-term postoperative outcomes remains unclear. Methods: This retrospective study analyzed 201 pediatric patients who underwent OS (n = 83), LS (n = 89), or RS (n = 29). OS was performed from 2004 to 2013, LS from 2013, and RS from 2021. Perioperative outcomes and early postoperative complications within one year were analyzed. Results: RS resulted in significantly lower blood loss (median 1.6 [IQR 0.86–2.71] mL/kg) than OS (7.0 [IQR 3.88–9.70] mL/kg) (p < 0.05). Time to oral intake was shortest in RS (median 3 [IQR 3–4] days) compared with LS and OS (both 4 [IQR 4–5] days) (p < 0.05). Drain removal occurred earlier in RS (median 5 [IQR 5–6] days) than in LS (6 [IQR 6–8] days) and OS (6 [IQR 6–7] days) (p < 0.05). Hospital stay was shorter with RS (median 7 [IQR 7–9] days) than with LS (10 [IQR 8–13] days) or OS (11 [IQR 10–14] days) (p < 0.05). Operative time was shorter for OS (median 273 [IQR 240–321] min) than LS (396 [IQR 334–453] min) or RS (388 [IQR 345–530] min) (p < 0.05). Median follow-up was 1 year (range, 1–3) for RS, 6 years (1–11) for LS, and 15 years (11–20) for OS. No significant differences were found in hepatolithiasis, anastomotic stricture, or cholangitis within the first postoperative year. Conclusion: RS demonstrated superior short-term outcomes, including reduced blood loss, faster recovery, and shorter hospitalization, suggesting lower invasiveness. Further studies with larger cohorts and extended follow-up are needed to evaluate long-term prognosis. Level of evidence: Ⅲ

DOI： 10.1016/j.jpedsurg.2025.162642

Long-Term Outcomes of Congenital Biliary Dilatation Surgery: A Single-Center Study Highlighting the High Incidence of Complications Within 5 Years Open Access

Maeda, T; Uchida, H; Shirota, C; Tainaka, T; Makita, S; Asai, H; Utsunomiya, A; Murata, Y; Guo, YH; Liu, JH

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 32 巻 ( 12 ) 頁： 901 - 909 2025年12月

記述言語：英語出版者・発行元：Journal of Hepato Biliary Pancreatic Sciences

Background: Congenital biliary dilatation (CBD) is a rare anomaly often treated surgically, yet postoperative complications remain a concern. This study aimed to evaluate the incidence, timing, and risk factors of such complications after CBD surgery. Methods: A retrospective review was conducted on 184 patients with CBD who underwent either open or laparoscopic surgery, with a mean follow-up of 9 years. The analysis focused on postoperative complications, including bile duct–related issues, pancreatic complications, and bowel obstruction. Results: Complications occurred in 14.7% of patients, predominantly bile duct–related (11.4%), followed by pancreatic (1.6%) and bowel obstruction (1.6%). Most bile duct complications, including anastomotic and intrahepatic strictures, emerged within 5 years postoperatively. Residual bile ducts were more common after open surgery, but no significant difference in other complications was observed between surgical approaches. No biliary malignancies developed during follow-up. Conclusion: The majority of complications occurred within 5 years after surgery, underscoring the importance of intensive monitoring during this period. Regular imaging and blood tests are essential for early detection. Although no malignancies were observed, long-term follow-up remains critical to address late-onset risks. Trial Registration: Clinical registration number: 2023-045432262.

DOI： 10.1002/jhbp.70011

特集総排泄腔遺残症小腸グラフトを使用した内視鏡的腟形成術

加藤大幾, 内田広夫, 城田千代栄, 田井中貴久, 牧田智, 小川雄大, 岡本眞宗, 滝本愛太朗, 安井昭洋, 高田瞬也, 林海斗, 中川洋一, 石井宏樹, 浅井一, 太田和樹

小児外科 57 巻 ( 11 ) 頁： 1192 - 1195 2025年11月

Cystathionine as a Potential Urinary Marker for Diagnosing and Assessing Pretreatment Risk in Neuroblastoma Open Access

Amano, H; Hayashi, Y; Harada, K; Narita, A; Fumino, S; Yamada, Y; Karakawa, S; Sakairi, M; Shirota, C; Tainaka, T; Yokota, K; Makita, S; Kato, D; Ishii, H; Deie, K; Mori, M; Mitani, Y; Tomioka, Y; Taguri, M; Koh, K; Tajiri, T; Kato, M; Matsumoto, K; Takahashi, Y; Iehara, T; Hinoki, A; Uchida, H

CANCER SCIENCE 116 巻 ( 11 ) 頁： 3102 - 3112 2025年11月

記述言語：英語出版者・発行元：Cancer Science

Urinary homovanillic acid (HVA) and vanillylmandelic acid (VMA) are widely used diagnostic markers for neuroblastoma, but urinary markers for risk assessment prior to invasive biopsy are lacking. We hypothesized that cystathionine (CTN) may be a new neuroblastoma biomarker and evaluated its utility for diagnosis and pretreatment risk assessment. 80 participants provided 202 urine samples: 32 from 32 control participants, 29 from 29 patients with primary neuroblastoma, and 141 from 30 patients with residual tumors, 11 of whom had primary neuroblastoma. Urinary CTN and HVA/VMA concentrations were measured using liquid chromatography/mass spectrometry. The area under the receiver operating characteristic curve (ROC-AUC) was used to evaluate diagnostic and pretreatment risk assessment performance according to the International Neuroblastoma Risk Group (INRG) pretreatment risk classification and the revised 2021 Children's Oncology Group (COG) neuroblastoma risk classification. Associations with prognostic factors were also evaluated. The AUC values for diagnosis were 0.920, 0.903, and 0.946 for HVA, VMA, and CTN, respectively. For pretreatment risk assessment (high-risk versus intermediate- and low-risk, and high- and intermediate-risk versus low-risk) the AUCs according to the INRG classification were 0.576 and 0.578 for HVA, 0.524 and 0.513 for VMA, and 0.852 and 0.708 for CTN, respectively, whereas they were 0.530 and 0.741 for HVA, 0.510 and 0.796 for VMA, and 0.758 and 0.981 for CTN, respectively, according to the COG classification. The values for MYCN status were 0.844 for HVA, 0.844 for VMA, and 0.942 for CTN. CTN may be a useful urinary marker for neuroblastoma diagnosis and pretreatment risk assessment.

DOI： 10.1111/cas.70169

Preoperative classification based on intrahepatic bile duct morphology for predicting postoperative complications in congenital biliary dilatation Open Access

Kato, D; Uchida, H; Shirota, C; Tainaka, T; Makita, S; Yasui, A; Nakagawa, Y; Maeda, T; Ishii, H; Amano, H; Hinoki, A

SURGERY 186 巻頁： 109596 2025年10月

記述言語：英語出版者・発行元：Surgery United States

Background: Late postoperative complications of congenital biliary dilatation include intrahepatic bile duct stones, cholangitis, and cholangiocarcinoma. This study aimed to establish a preoperative classification system using intrahepatic bile duct morphology and evaluate its effectiveness in predicting postoperative complications. Methods: This retrospective study reviewed 196 patients who underwent radical congenital biliary dilatation surgery between 2003 and 2022. Patients were classified into 3 risk groups based on preoperative cholangiopancreatography findings of intrahepatic bile duct morphology: risk type–low, no intrahepatic bile duct dilatation; risk type–intermediate, intrahepatic bile duct dilatation without downstream bile duct stenosis, but including stenosis at the hilar region; risk type–high, intrahepatic bile duct dilatation with downstream bile duct stenosis, including stenosis at the hilar region and more peripherally than the secondary branches. Results: The incidence of intrahepatic bile duct stones was significantly higher in risk type–high (n = 9, 53%) (P < .001) compared with risk type–low (0%) and risk type–intermediate (n = 3, 2.8%). The incidence of cholangitis was significantly higher in risk type–high (n = 9, 53%) (P < .001) compared with risk type–low (n = 3, 4.3%) and risk type–intermediate (n = 3, 2.8%). No cases of cholangiocarcinoma were observed. Patients with risk type–high who did not improve with double-balloon endoscopic retrograde cholangiography required percutaneous transhepatic biliary drainage or hepatectomy. Conclusions: Our newly proposed preoperative classification system is effective in predicting postoperative complications in congenital biliary dilatation patients. Patients classified as risk type–high require careful postoperative follow-up, particularly when intraoperative bile ductoplasty fails to relieve stenosis. Identifying high-risk cases preoperatively may help improve long-term surgical outcomes.

DOI： 10.1016/j.surg.2025.109596

Safety and efficacy of robot-assisted bile ductoplasty and intrapancreatic bile duct resection in congenital biliary dilatation: a single-center retrospective cohort (2013-2024) Open Access

Kato, D; Shirota, C; Uchida, H; Hinoki, A; Makita, S; Ogawa, K; Okamoto, M; Yasui, A; Takada, S; Hayashi, K; Nakagawa, Y; Ishii, H; Asai, H; Amano, H; Tainaka, T

JOURNAL OF ROBOTIC SURGERY 19 巻 ( 1 ) 頁： 618 2025年9月

記述言語：英語出版者・発行元：Journal of Robotic Surgery

Robot-assisted surgery is increasingly being utilized for congenital biliary dilatation (CBD); however, limited data exist on its feasibility across age groups, particularly for bile ductoplasty and intrapancreatic bile duct (IPBD) resection. This was a retrospective cohort study that compared the outcomes of robot-assisted versus laparoscopic CBD surgery in 159 patients (Rob group: 57; Lap group: 102) treated between 2013 and 2024. In the Rob group, hospital stay was significantly shorter, enteral feeding was started earlier, and drain duration was reduced, especially in pediatric patients. Late complications (e.g., cholangitis) were significantly less common in the Rob group compared to the Lap group (3.5 vs. 18%). The length of residual IPBD was similar in both groups. Furthermore, robotic procedures facilitate a secure and accurate hilar bile ductoplasty, thereby contributing to favorable outcomes without anastomotic stenosis or hepatolithiasis. While these findings support the potential advantages of robot-assisted CBD surgery, the follow-up period was significantly shorter in the Rob group than in the Lap group, and thus definitive conclusions regarding long-term outcomes cannot yet be drawn. Robot-assisted surgery appears safe and is associated with faster short-term recovery; long-term comparative effectiveness requires longer follow-up and adjusted analyses.

DOI： 10.1007/s11701-025-02782-8

First Report of Single-Surgeon Single-Incision Laparoscopic Percutaneous Extraperitoneal Closure Using the Senhance Robotic System as Camera Holder for Pediatric Inguinal Hernia Open Access

Kato, D; Tainaka, T; Shirota, C; Makita, S; Ogawa, K; Okamoto, M; Yasui, A; Takada, S; Hayashi, K; Nakagawa, Y; Ishii, H; Asai, H; Utsunomiya, A; Hinoki, A; Nagata, N; Uchida, H

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 18 巻 ( 1 ) 頁： e70131 2025年8月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

Single-incision laparoscopic percutaneous extraperitoneal closure (SILPEC) is used for pediatric inguinal hernia repair in several institutions. However, SILPEC requires at least two operators. We report the first SILPEC performed by a single surgeon using the Senhance robotic system for pediatric patients. The Senhance, which features reusable 3- to 5-mm instruments and tremor filtering, allows both eye-tracked and manually adjustable camera control via a standalone robotic arm, resulting in stable, assistant-free visualization while preserving the small port philosophy. Two pediatric patients with inguinal hernia underwent SILPEC. The laparoscope was mounted on one robotic arm, and a 3-mm curved grasper was manipulated manually through the same incision. Operative times were 71 and 77 min, without blood loss, conversions, or perioperative complications. Both patients remained recurrence-free. This report demonstrates the feasibility, safety, procedural efficiency, and potential cost-effectiveness of single-surgeon robotic assisted SILPEC, thus offering a pragmatic solution for understaffed pediatric surgical units.

DOI： 10.1111/ases.70131

Thoracoscopic Posterior Tracheopexy After Esophageal Atresia Repair: A Case Report Open Access

Makita, S; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Amano, H; Yasui, A; Nakagawa, Y; Kato, D; Maeda, T; Ishii, H; Asai, H; Murata, Y; Utsunomiya, A; Liu, JH; Guo, YH

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 18 巻 ( 1 ) 頁： e70128 2025年8月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

Esophageal atresia (EA) is frequently associated with tracheomalacia (TM). Recently, the use of posterior tracheopexy (PT) during EA repair for addressing TM has gained attention. Herein, we report a case of thoracoscopic PT in a 6-year-old boy with EA. Due to severe TM, tracheostomy was performed at 51 days of age. At 6 years of age, bronchoscopy still revealed significant collapse of the membranous portion of the trachea, extending from the subglottic area to the carina. Due to its capability to address a wider segment of the airway, thoracoscopic PT was selected for the treatment of TM. Four ports were placed in the right hemithorax, and the membranous portion of the trachea was sutured to the anterior longitudinal spinal ligament using four 3–0 nonabsorbable stitches. The patient was discharged uneventfully on postoperative Day 6. Postoperative computed tomography scan showed improved airway patency, and the patient exhibited resolution of exertional symptoms.

DOI： 10.1111/ases.70128

Emergency One-Stage Robotic Surgery for Congenital Biliary Dilatation With Bile Duct Perforation in a Pediatric Patient: A Case Report Open Access

Asai, H; Shirota, C; Tainaka, T; Makita, S; Ogawa, K; Okamoto, M; Yasui, A; Takada, S; Hayashi, K; Nakagawa, Y; Katou, D; Ishii, H; Utsunomiya, A; Uchida, H

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 18 巻 ( 1 ) 頁： e70122 2025年7月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

Bile duct perforation is a rare, serious complication of congenital biliary dilatation (CBD). While traditionally managed with a two-stage surgical approach, recent reports suggest that one-stage, minimally invasive approaches may be feasible. We present the case of a 13-month-old female who developed bile duct perforation associated with a protein plug in the common channel. Following the correction of coagulopathy, emergency robotic surgery was performed, including bile duct excision and Roux-en-Y hepaticojejunostomy. Despite significant adhesions and an anatomical anomaly in which the right hepatic artery coursed anterior to the common hepatic duct, robotic dissection and reconstruction were safely completed. The postoperative course was uneventful, and the patient was discharged. This report highlights the feasibility and potential advantages of one-stage robotic surgery for CBD with perforation, even in the presence of active inflammation and vascular anomalies. Similar cases must be reported and evaluated to understand the indications and limitations of this approach.

DOI： 10.1111/ases.70122

Clinical outcomes of primary thoracoscopic repair in patients with esophageal atresia and tracheoesophageal fistula: A multicenter study from the East Asia pediatric surgery research consortium. Open Access

Tsuruno Y, Sugita K, Ota K, Fung ACH, Shigeta Y, Deie K, Onishi S, Chan IHY, Takezoe T, Miyake Y, Tsutsuno T, Shibuya S, Chung PHY, Shirota C, Tainaka T, Miyano G, Kawashima H, Wong KKY, Uchida H, Ieiri S

Journal of pediatric surgery 頁： 162470 2025年7月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Purpose: Thoracoscopic repair for esophageal atresia/tracheoesophageal fistula (EA/TEF) has not been widely adopted despite its introduction nearly 25 years ago. We reviewed the clinical outcomes of primary thoracoscopic EA/TEF repair performed at 5 leading centers for minimally invasive pediatric surgery in East Asia. Methods: A retrospective review was conducted of patients with EA/TEF (Gross type C) who underwent primary thoracoscopic repair between 2008 and 2024. Patients with Gross type A/B/D/E, long-gap EA requiring staged repair, or trisomy18 were excluded. Collected data included demographics, surgical outcomes, and long-term outcomes. Results: A total of 127 patients underwent thoracoscopic repair for EA/TEF during the study period. The mean gestational age, birth weight, and age at surgery were 38 ± 2.1 weeks, 2540 ± 487 g, and 3.0 ± 7.5 days, respectively. Thirty patients (23.6 %) had cardiac anomalies, and 8 (6.3 %) had chromosomal anomalies (excluding trisomy18). The mean operative time and intraoperative blood loss were 191 ± 67 min and 4.3 ± 8.7 mL, respectively. Nine patients (7.1 %) required conversion to open surgery and 10 (7.9 %) required blood transfusions. The mean length of hospitalization was 74 ± 73 days. Postoperative complications included anastomotic leak in 8 (6.3 %) patients and chylothorax in 9 (7.1 %). The long-term outcomes included anastomotic stenosis requiring dilatation in 52 patients (41.6 %), gastroesophageal reflux (GER) in 49 patients (39.2 %), and recurrent TEF in 3 (2.4 %). Mortality case was recognized in 2 (1.6 %). Conclusion: The results of this study indicate that thoracoscopic repair for EA/TEF is a safe procedure when performed on selected patients and in centers with suitable thoracoscopic experience.

DOI： 10.1016/j.jpedsurg.2025.162470

下血，ショック状態，門脈ガス血症を認めた新生児ミルクアレルギーの1例 Open Access

尾形誠弥, 城田千代栄, 住田亙, 牧田智, 滝本愛太朗, 高田瞬也, 中川洋一, 合田陽祐, 檜顕成, 内田広夫

日本小児外科学会雑誌 61 巻 ( 4 ) 頁： 723 - 727 2025年6月

記述言語：日本語出版者・発行元：特定非営利活動法人日本小児外科学会

<p>下血，ショック状態，門脈ガス血症を呈した新生児ミルクアレルギー症例を経験した．患者は，在胎39週4日，3,020 gで出生した男児で，日齢1に嘔吐，日齢3に少量の鮮血便を認め近医で経過観察となっていたが，日齢8に哺乳不良，傾眠傾向，頻回嘔吐，赤褐色水様便を認め前医を受診した．下血，腹部単純X線検査で門脈ガス像，造影CTで腸管拡張を認めたため絞扼性腸閉塞が疑われ緊急手術目的で当院へ搬送された．超音波検査や造影CTでは全体的な腸管壁の肥厚を認めたが腸閉塞や腸管壊死の所見はなく，ミルクアレルギーを疑い保存的治療を行った．その後速やかに症状は改善し，アレルゲン特異的リンパ球刺激試験でκ・βカゼインとラクトフェリンが強陽性と判明し，ミルクアレルギーの診断が確定した．ショック状態，門脈ガス血症を呈していても腹部所見や造影CT画像などの検査所見を十分に検討し，ミルクアレルギーも含めた鑑別診断を行うことが重要と考えられた．</p>

DOI： 10.11164/jjsps.61.4_723

Vitamin K deficiency bleeding and optimal prophylaxis methods in biliary atresia: A surveillance study in Japan Open Access

Okubo, R; Shirota, C; Wada, M; Shinkai, M; Tomita, H; Umeda, S; Miyake, H; Matsuura, T; Fumino, S; Odaka, A; Hibi, T; Harumatsu, T; Yokoi, A; Hishiki, T; Ono, S; Matsushita, K; Japanese Biliary Atresia Soc

PEDIATRICS INTERNATIONAL 67 巻 ( 1 ) 頁： e70075 2025年5月

記述言語：英語出版者・発行元：Pediatrics International

Background: Vitamin K (VK) prophylaxis refers to the administration of VK to newborns to prevent neonatal VK deficiency bleeding (VKDB), which is characterized by intracranial hemorrhage (ICH). This study investigated the relationship between VK prophylaxis methods and VKDB in biliary atresia (BA). Methods: The survey targeted 497 cases in the Japanese Biliary Atresia Registry between 2015 and 2019, of which 395 (79.5%) returned the questionnaire. Of the 395 patients, 289 were selected after excluding cases in which the gestational age was <36 weeks or the VK prophylaxis methods/feeding contents were unknown. The patients were categorized into two groups according to VK prophylaxis methods. We conducted a comparative study using propensity score matching. The prognosis of patients with or without ICH was also investigated. Results: In the analysis, no VKDB occurred in patients using the 3-month method. In the propensity score matching analysis, age at first visit and age at surgery were later in the three-times method (p = 0.018 and p = 0.022, respectively); VKDB was higher in the three-times method than in the 3-month method (p = 0.029). ICH, jaundice disappearance, cholangitis, and native liver survival rates (NLSRs) were not significantly different between groups. When examining the prognosis based on ICH occurrence, the two groups showed no significant differences in jaundice disappearance, cholangitis, and NLSRs. The ICH group had a greater number of cases of delayed mental and/or motor development. Conclusions: In BA, the 3-month method is effective in preventing VKDB, and early diagnosis is crucial.

DOI： 10.1111/ped.70075

Hyponatremia is not induced by postoperative hypotonic fluids in infants with biliary atresia after sufficient diuresis Open Access

Yokota, K; Uchida, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Amano, H; Nakagawa, Y; Maeda, T; Gohda, Y; Kato, D; Hinoki, A

PEDIATRICS INTERNATIONAL 67 巻 ( 1 ) 頁： e70016 2025年5月

記述言語：英語出版者・発行元：Pediatrics International

Background: In Japan, the administration of extra-hypotonic fluids (approximately 35 mmol/L of sodium) as maintenance fluid is still the mainstream practice, and there have been relatively few reports on maintenance intravenous fluid therapy. Since 2014, our institution has administered maintenance fluids containing 83 mmol/L of Na (HALF) after diuresis is achieved post-Kasai portoenterostomy for biliary atresia (BA). We investigated whether hyponatremia is induced by the administration of half saline during postoperative maintenance of infants with BA. Methods: Patients who underwent surgery for BA at our institution were included. The serum sodium concentration ([Na]) before and after surgery and the incidence of hyponatremia were compared between patients administered fluids with [Na] of 35 mmol/L (exHYPO group, 59 patients) and those with [Na] of 83 mmol/L (HALF group, 20 patients). Results: The median age of patients was 59 days. There were no significant differences in the background or preoperative [Na] between groups. There was a significant decrease in [Na] on postoperative day 3 (POD3) in the exHYPO group compared with the preoperative [Na] value in the exHYPO group and the [Na] value on POD3 in the HALF group. There were no significant differences in [Na] before and after surgery in the HALF group. The odds ratio was 21.0, and the 95% confidence interval was 3.31–130, indicating that the exHYPO group had an increased risk of hyponatremia. Conclusion: Administration of half saline as maintenance fluid can maintain [Na] levels during postoperative care of infants with BA.

DOI： 10.1111/ped.70016

Young pediatric surgeons without endoscopic surgical skill qualification safely perform advanced endoscopic surgery under the supervision of expert qualified surgeons Open Access

Ota, K; Tainaka, T; Hinoki, A; Shirota, C; Makita, S; Yasui, A; Nakagawa, Y; Kato, D; Maeda, T; Ishii, H; Uchida, H

SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 39 巻 ( 5 ) 頁： 2925 - 2930 2025年5月

記述言語：英語出版者・発行元：Surgical Endoscopy

Background: Young pediatric surgeons should receive adequate training in various minimally invasive surgeries (MIS). However, it is essential to maintain patient safety and outcomes during the learning process. In Japan, the endoscopic surgical skill qualification (ESSQ) system in pediatric surgery was initiated by the Japan Society for Endoscopic Surgery (JSES) in 2009 to objectively evaluate the skill of endoscopic surgeons. This study compared perioperative outcomes between pediatric surgeons with ESSQ qualifications and those without (non-ESSQ). Methods: We retrospectively reviewed the medical records of children with choledochal cyst (CC), lobectomy, and biliary atresia (BA) who underwent MIS at our hospital from 2013 to 2023. We assessed the performance of nonqualified surgeons assisted by supervisors with ESSQ qualifications. Results: This study included the records of 101 surgical cases with CC (operated by ESSQ: 36, non-ESSQ: 65), 78 patients with BA (operated by ESSQ: 35, non-ESSQ: 43), and 67 patients with lobectomy (operated by ESSQ: 31, non-ESSQ: 36). For the CC and lobectomy groups, there were no significant differences in operating time, blood loss, and postoperative complications (PO) between the ESSQ and non-ESSQ groups. In BA, the operative times for the ESSQ and non-ESSQ groups were 310 and 377 min, respectively (p = 0.001). Furthermore, no significant differences were observed in blood loss, PO, jaundice-clearance ratio, and jaundice-free survival rate with the native liver between the two groups. Conclusion: The results indicate that young pediatric surgeons can safely perform MIS while practicing under the supervision of experienced ESSQ-qualified surgeons.

DOI： 10.1007/s00464-025-11657-w

Learning curve comparison of robot-assisted and laparoscopic hepaticojejunostomy: a focus on critical suturing Open Access

Liu, JH; Maeda, T; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Gohda, Y; Nakagawa, Y; Takimoto, A; Guo, YH; Kato, D; Yasui, A; Hinoki, A; Uchida, H

FRONTIERS IN PEDIATRICS 13 巻頁： 1558362 2025年3月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Background: Robot-assisted surgery (RS) has gained popularity due to its potential advantages over conventional laparoscopic surgery (LS). However, the specific suturing steps that benefit most from RS in terms of efficiency remain unclear. This study aimed to compare the suturing performance and learning curves of RS and LS during hepaticojejunostomy. Methods: We retrospectively analyzed surgical videos of patients who underwent hepaticojejunostomy performed by the same surgeon between 2016 and 2023. Cases with incomplete data or conversion to open surgery were excluded. Suturing efficiency, anastomotic precision, and learning curves were evaluated using standardized metrics. Results: A total of 33 patients were included in the final analysis (17 RS, 16 LS). The median suture time per stitch was significantly shorter in the RS group (P = 0.017). The greatest efficiency gains were observed at the second (P = 0.041) and final stitches (P = 0.041). Complication rates were comparable between the two groups (P = 0.986). Conclusion: RS significantly improves efficiency at challenging suturing steps and provides a more consistent learning curve, highlighting its potential advantage for complex pediatric procedures such as hepaticojejunostomy. Future multicenter studies with larger sample sizes and longer follow-up are needed to validate these results and explore long-term outcomes.

DOI： 10.3389/fped.2025.1558362

Developing an Effective Off-the-job Training Model and an Automated Evaluation System for Thoracoscopic Esophageal Atresia Surgery

Yasui, A; Hayashi, Y; Hinoki, A; Amano, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Kano, Y; Takimoto, A; Nakagawa, Y; Takuya, M; Kato, D; Gohda, Y; Liu, JH; Guo, YH; Mori, K; Uchida, H

JOURNAL OF PEDIATRIC SURGERY 60 巻 ( 2 ) 頁： 161615 2025年2月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Background: Pediatric minimally invasive surgery requires advanced technical skills. Off-the-job training (OJT), especially when using disease-specific models, is an effective method of acquiring surgical skills. To achieve effective OJT, it is necessary to provide objective and appropriate skill assessment feedback to trainees. We aimed to construct a system that automatically evaluates surgical skills based on forceps movement using deep learning (DL). Methods: Using our original esophageal atresia OJT model, participants were tasked with performing esophageal anastomosis. All tasks were recorded for image analysis. Based on manual objective skill assessments, each participant's surgical skills were categorized into two groups: good and poor. The motion of the forceps in both groups was used as training data. Employing this training data, we constructed an automated system that recognized the movement of forceps and determined the quality of the surgical technique. Results: Thirteen participants were assigned to the good skill group and 32 to the poor skill group. These cases were validated using an automated skill assessment system. This system showed a precision of 75%, a specificity of 94%, and an area under the receiver operating characteristic curve of 0.81. Conclusions: We constructed a system that automatically evaluated the quality of surgical techniques based on the movement of forceps using DL. Artificial intelligence diagnostics further revealed the procedures important for suture manipulation. Levels of Evidence: Level IV

DOI： 10.1016/j.jpedsurg.2024.06.023

Evaluation of the risk factors for postoperative pectus excavatum and scoliosis in cystic lung disease. Open Access

Takahisa T, Chiyoe S, Wataru S, Satoshi M, Hizuru A, Yoko K, Akihiro Y, Daiki K, Takuya M, Yousuke G, Hiroki I, Kazuki O, Akinari H, Hiroo U

Pediatric surgery international 41 巻 ( 1 ) 頁： 62 2025年1月

Automated Skill Evaluation Method for Surgical Images using Optical Flow and Attention Mechanism

Feng, YX; Hayashi, Y; Oda, M; Kitasaka, T; Yasui, A; Shirota, C; Uchida, H; Mori, K

MEDICAL IMAGING 2025: IMAGE-GUIDED PROCEDURES, ROBOTIC INTERVENTIONS, AND MODELING 13408 巻 2025年

出版者・発行元：Progress in Biomedical Optics and Imaging Proceedings of SPIE

This paper describes an automated skill evaluation method for surgical images based on optical flow and self-attention mechanisms. This method uses a segment of a surgical video as input to a deep learning network and outputs scores. Previous methods primarily analyzed the kinematic data of surgical robots to assess surgical skills; however, kinematic data is often unavailable in non-robotic surgeries. Therefore, we propose a regression model that uses surgical video as input data to evaluate surgical skills through optical flow and self-attention mechanisms. We use optical flow to extract motion information from surgical images and employ the ViViT (Video Vision Transformer) model to extract features from both image information and motion information. Finally, we concatenate the two feature vectors and output six scores corresponding to the GRS (Global Rating Scale) evaluation criteria. To validate the evaluation performance of the model, we calculated the RMSE (Root Mean Squared Error) between the model's output scores of surgical videos and the ground truth scores in the surgical skill assessment dataset JIGSAWS. A low RMSE of 0.79 demonstrated that our method can reliably estimate scores, highlighting its potential for surgical skill assessment.

DOI： 10.1117/12.3049068

Emergency Surgical Management of Chemotherapy-Induced Tumor Rupture in a Patient with MYCN-Amplified Neuroblastoma: A Case Report Open Access

Ogawa, K; Makita, S; Utsunomiya, A; Asai, H; Ishii, H; Kato, D; Nakagawa, Y; Hayashi, K; Takada, S; Takimoto, A; Yasui, A; Okamoto, M; Tainaka, T; Shirota, C; Uchida, H

SURGICAL CASE REPORTS 11 巻 ( 1 ) 頁： n/a 2025年

先天性胆道拡張症の術前肝内胆管形態による長期合併症予測 Open Access

加藤大幾, 内田広夫, 城田千代栄, 田井中貴久, 牧田智, 小川雄大, 岡本眞宗, 安井昭洋, 高田瞬也, 林海斗, 中川洋一, 石井宏樹, 浅井一, 宇都宮有美

日本膵・胆管合流異常研究会プロシーディングス 48 巻 ( 0 ) 頁： 78 - 79 2025年

当科で経験した先天性胆道拡張症術後肝内結石に対する肝切除の4例 Open Access

牧田智, 内田広夫, 檜顕成, 城田千代栄, 田井中貴久, 天野日出, 小川雄大, 岡本慎宗, 安井昭洋, 高田瞬也, 林海斗, 中川洋一, 加藤大幾, 石井宏樹, 浅井一, 宇都宮有美, 村田結衣, Yaohui Guo, Liu Jiahui

日本膵・胆管合流異常研究会プロシーディングス 48 巻 ( 0 ) 頁： 80 - 81 2025年

子どもvs大人：ロボット支援先天性胆道拡張症手術の成績と術中課題 Open Access

林海斗, 内田広夫, 城田千代栄, 田井中貴久, 牧田智, 小川雄大, 安井昭洋, 岡本慎宗, 高田瞬也, 中川洋一, 加藤大幾, 石井宏樹, 浅井一, 太田和樹

日本膵・胆管合流異常研究会プロシーディングス 48 巻 ( 0 ) 頁： 38 - 39 2025年

Safety and feasibility of robot-assisted surgery for pediatric patients weighing ≤ 10 kg with congenital biliary dilatation

Ishii, H; Shirota, C; Tainaka, T; Makita, S; Satomi, M; Kato, D; Maeda, T; Ota, K; Hinoki, A; Uchida, H

JOURNAL OF ROBOTIC SURGERY 19 巻 ( 1 ) 頁： 34 2024年12月

記述言語：英語出版者・発行元：Journal of Robotic Surgery

The advantage of robot-assisted surgery (RAS) is its ability to perform fine surgical operations with higher-resolution images. RAS should be particularly beneficial for small children, but it requires a certain amount of working space. The da Vinci Surgical System instructions state that careful consideration of indications for robotic surgery in patients weighing ≤ 10 kg is required. We aimed to investigate the safety and efficacy of RAS in pediatric patients weighing ≤ 10 kg with congenital biliary dilatation (CBD). Pediatric patients who underwent surgery for CBD at our institution were included. Patients were divided into three groups: the ≤ 10 kg group (RS-S) and the > 10 kg group (RS-L), both of which underwent robotic surgery, and another ≤ 10 kg group (LS-S), which underwent laparoscopic surgery. No patient required conversion to laparotomy. The operative duration was significantly shorter in the RS-S group than in the RS-L group. Intraoperative bleeding and length of hospital stay did not differ significantly between the RS-S and RS-L groups. Postoperative drain removal and hospital stay were shorter in the RS-S group than in the LS-S group. Our findings suggest that RAS can be safely and precisely implemented for infants weighing ≤ 10 kg.

DOI： 10.1007/s11701-024-02181-5

Characteristics and outcomes of minimally invasive surgery for congenital biliary dilatation in children aged <6 years: Comparison between children and adults Open Access

Nakagawa, Y; Uchida, H; Shirota, C; Tainaka, T; Makita, S; Satomi, M; Yasui, A; Kano, Y; Kato, D; Maeda, T

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 31 巻 ( 12 ) 頁： 876 - 885 2024年12月

記述言語：英語出版者・発行元：Journal of Hepato Biliary Pancreatic Sciences

Background/Purpose: We evaluated the minimally invasive surgery for congenital biliary dilatation (CBD) in adults and children and analyzed the surgical outcomes, especially in children aged <6 years. Methods: Characteristics and surgical outcomes of patients with CBD who underwent minimally invasive surgery at our hospital between 2013 and 2023 were retrospectively reviewed. Results: Overall, 129 patients (89 children aged <6 years, 9 children aged between 6 and 18 years, and 21 adults) were included in this study. Children exhibited more protein plug presence and abnormal biochemical data than adults. Incidence of postoperative pancreatic fistulas was highest in the adult group (3.4%, 11%, and 33%, respectively, p <.01). In children aged <6 years, postoperative bile leakage and pancreatic fistulas occurred in 9.0% and 3.4% of patients, respectively. Multivariate logistic regression analysis revealed that the Todani IVA was associated with a decrease in postoperative bile leakage (odds ratio: −1.7; 95% confidence interval: (−3.3)–(−0.22), p =.03). Conclusion: Adults with CBD required prolonged operative times and had more short-term complications than children with CBD. In children aged <6 years, minimally invasive surgery for CBD can be safely performed; however, a small diameter of the bile duct may be associated with bile leakage.

DOI： 10.1002/jhbp.12069

Usefulness of lateral-anteroposterior dimeter ratio in patients with tracheomalacia associated with esophageal atresia

Sumida, W; Tainaka, T; Shirota, C; Makita, S; Amano, H; Yasui, A; Maeda, T; Kato, D; Goda, Y; Ishii, H; Ota, K; Yaohui, G; Jiahui, L; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 282 2024年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Tracheomalacia (TM) is commonly associated with esophageal atresia (EA) and compression by the brachiocephalic artery is a factor for TM. Previous research has focused on the lateral-to-anteroposterior tracheal diameter ratio (LAR). This study aimed to assess the LAR and postoperative outcomes of EA patients. Methods: Patients undergoing thoracoscopic repair for EA between March 2020 and October 2023 were enrolled. Posterior tracheopexy (PT) was performed during thoracoscopic repair of EA on patients with bronchoscopy-confirmed TM; clinical courses and LAR were retrospectively analyzed. Results: Overall, 18 patients were enrolled; 14 patients underwent PT. Their median preoperative and postoperative LARs were 2.26 and 1.50, respectively; this difference was statistically significant. Four patients without TM did not undergo PT and their median LAR was 1.59. Median LAR for patients without PT was lower than that of preoperative patients with PT and no statistical differences were observed from that of postoperative patients with PT. The patients whose LAR improved with PT did not require further surgical intervention for TM. One patient who had a postoperative LAR of 2.25 required external tracheal stenting. Conclusion: LAR is a useful index for determining the severity of TM associated with EA. LAR can reflects the efficacy of PT.

DOI： 10.1007/s00383-024-05877-9

特集必携小児外科レジデントマニュアル2 手術器具

田井中貴久, 城田千代栄, 牧田智, 天野日出, 檜顕成, 内田広夫

小児外科 56 巻 ( 9 ) 頁： 933 - 937 2024年9月

Eicosapentaenoic acid administration ameliorates the progression of liver fibrosis after laparoscopic Kasai portoenterostomy Open Access

Sumida, W; Tainaka, T; Shirota, C; Makita, S; Amano, H; Yasui, A; Maeda, T; Kato, D; Goda, Y; Ishii, H; Ota, K; Guo, YH; Liu, JH; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 239 2024年8月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Biliary atresia (BA) poses a persistent challenge characterized by ongoing liver inflammation and subsequent fibrosis even after the clearance of jaundice (COJ). This study aimed to evaluate the therapeutic potential of eicosapentaenoic acid (EPA) in alleviating liver inflammation and limiting fibrosis during the post-COJ phase of BA. Methods: Among the BA patients undergoing laparoscopic Kasai portoenterostomy (lapKP) between December 2016 and October 2021, EPA (20–40 mg/kg/day) was administered orally to those whose parents consented. The study included patients from January 2014 to October 2021, classifying them into two groups: EPA-treated (Group E) and untreated (Group N). Their liver fibrosis and clinical course at 1 and 2 years post-lapKP were compared. Results: Group E consisted of 25 patients, while Group N comprised 32 patients. Twenty-one patients in Group E and 25 patients in Group N achieved COJ (p = 0.74). Among jaundice-free patients at 1 and 2 years post-lapKP, Group E exhibited significantly lower M2BPGi levels and platelet counts, and Group E showed a significant reduction in Aminotransferase-to-Platelet Ratio Index (APRI) at 2 years post-lapKP. Conclusion: Although EPA administration did not improve COJ, it attenuated the progression of liver fibrosis during the 2 years following lapKP in jaundice-free patients. (200/200Words).

DOI： 10.1007/s00383-024-05800-2

First pediatric pelvic surgery with the Senhance® robotic surgical system: A case series Open Access

Kato, D; Uchida, H; Shirota, C; Tainaka, T; Makita, S; Amano, H; Satomi, M; Yasui, A; Nakagawa, Y; Maeda, T; Ishii, H; Ota, K; Nagata, N; Hinoki, A

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 17 巻 ( 4 ) 頁： e13379 2024年8月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

The Senhance® robotic system (Senhance [Asensus Surgical Inc., Naderhan, NC, USA]) is a new surgical assistive robot following the da Vinci Surgical System that has been demonstrated to be safe and efficacious. Herein, we report the first case series of pediatric pelvic surgery using Senhance. Two anorectoplasties and one rectal pull-through coloanal anastomosis for rectal stenosis were performed in three children (5–9 months, 7–9 kg) using a 10-mm three-dimensional (3D) 4K camera and 3 and 5 mm forceps operated with Senhance. None of the patients had intraoperative complications or a good postoperative course. Pediatric pelvic surgery with Senhance could be performed precisely and safely with a small body cavity. With its beautiful 3D images, motion of forceps with reduced tremor, and availability of 3-mm forceps, Senhance may be better suited for children compared with other models.

DOI： 10.1111/ases.13379

特集再手術の戦略と実際先天性横隔膜ヘルニア再発に対する手術アプローチ

合田陽祐, 内田広夫, 横田一樹, 城田千代栄, 田井中貴久, 住田亙, 牧田智, 里見美和, 安井昭洋, 加藤大幾, 前田拓也, 石井宏樹, 太田和樹, 檜顕成

小児外科 56 巻 ( 7 ) 頁： 682 - 685 2024年7月

特集再手術の戦略と実際胆道閉鎖症

城田千代栄, 田井中貴久, 牧田智, 加藤大幾, 前田拓也, 里見美和, 石井宏樹, 太田和樹, 檜顕成, 内田広夫

小児外科 56 巻 ( 7 ) 頁： 701 - 703 2024年7月

Bile lakes in patients with biliary atresia who presented with jaundice-free native liver survival indicating the risk of subsequent liver transplantation due to various factors Open Access

Gohda, Y; Uchida, H; Sumida, W; Shirota, C; Tainaka, T; Makita, S; Satomi, M; Yasui, A; Kato, D; Maeda, T; Ishii, H; Ota, K; Guo, YH; Liu, JH; Hinoki, A

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 197 2024年7月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: The prognostic factors of subsequent liver transplantation (LT) in patients with biliary atresia (BA) who presented with jaundice-free native liver survival were investigated. Methods: This study retrospectively reviewed patients who underwent portoenterostomy (PE) for BA. Patients with jaundice-free native liver survival at 1 year postoperatively were divided into the autologous liver survivor and liver transplant recipient groups. Peri- and postoperative data were compared between the two groups. Results: Among 97 patients with BA, 29 who received LT within 1 year after PE were excluded from the analysis. Further, 48 patients currently living with native liver and 20 who received LT after 1 year postoperatively were compared. Bile lake (BL) was the strongest risk factor of LT. The risk score was 2.38∗BLscore+0.00466∗TBA, and the area under the receiver operating characteristic curve was 0.83. Patients with BL and those without significantly differed in terms of the native liver survival rate. Patients with BL who presented with not only cholangitis but also gastrointestinal hemorrhage and hepatopulmonary syndrome received LT. Conclusion: BL can cause different pathologies. Moreover, it is an evident risk factor of subsequent LT in patients with BA who are living with native liver at 1 year after PE.

DOI： 10.1007/s00383-024-05786-x

Cholestasis after Kasai operation predicts portal hypertension in native liver survivors of biliary atresia: a multicenter study Open Access

Chung, PHY; Harumatsu, T; Nakagawa, Y; Tsuboi, K; Chan, EKW; Leung, MWY; Yeung, FY; Muto, M; Kawano, T; Amano, H; Shirota, C; Nakamura, H; Koga, H; Miyano, G; Yamataka, A; Ieiri, S; Uchida, H; Wong, KKY

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 196 2024年7月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: This study evaluated portal hypertension (PHT) and its predictors among native liver survivors (NLS) of biliary atresia (BA) after Kasai portoenterostomy (KPE). Methods: This was a multicenter study using prospectively collected data. The subjects were patients who remained transplant-free for 5 years after KPE. Their status of PHT was evaluated and variables that predicted PHT were determined by regression analysis and receiver operating characteristic (ROC) curve. Results: Six centers from East Asia participated in this study and 320 subjects with KPE between 1980 to 2018 were analyzed. The mean follow-up period was 10.6 ± 6.2 years. At the 5th year after KPE, PHT was found in 37.8% of the subjects (n = 121). Patients with KPE done before day 41 of life had the lowest percentage of PHT compared to operation at older age. At 12 months after KPE, PHT + ve subjects had a higher bilirubin level (27.1 ± 11.7 vs 12.3 ± 7.9 µmol/L, p = 0.000) and persistent jaundice conferred a higher risk for PHT (OR = 12.9 [9.2–15.4], p = 0.000). ROC analysis demonstrated that a bilirubin level above 38 µmol/L at 12 months after KPE predicted PHT development (sensitivity: 78%, specificity: 60%, AUROC: 0.75). Conclusions: In BA, early KPE protects against the development of PHT among NLSs. Patients with persistent cholestasis at one year after KPE are at a higher risk of this complication. They should receive a more vigilant follow-up. Level of evidence: Level III

DOI： 10.1007/s00383-024-05775-0

Thoracoscopic primary repair is useful for esophageal atresia with tracheoesophageal fistula in neonates with low body weight Open Access

Gohda, Y; Uchida, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Satomi, M; Yasui, A; Kanou, Y; Nakagawa, Y; Kato, D; Maeda, T; Guo, YH; Liu, JH; Ishii, H; Ota, K; Hinoki, A

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 149 2024年6月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: The surgical indication of thoracoscopic primary repair for esophageal atresia with tracheoesophageal fistula is under debate. The current study aimed to investigate the outcome of thoracoscopic primary repair for esophageal atresia with tracheoesophageal fistula in patients weighing < 2000 g and those who underwent emergency surgery at the age of 0 day. Methods: The surgical outcomes were compared between patients weighing < 2000 g and those weighing > 2000 g at surgery and between patients who underwent surgery at the age of 0 day and those who underwent surgery at age ≥ 1 day. Results: In total, 43 patients underwent thoracoscopic primary repair for esophageal atresia with tracheoesophageal fistula. The surgical outcomes according to body weight were similar. Patients who underwent surgery at the age of 0 day were more likely to develop anastomotic leakage than those who underwent surgery at the age of ≥ 1 day (2 vs. 0 case, p = 0.02). Anastomotic leakage was treated with conservative therapy. Conclusion: Thoracoscopic primary repair is safe and useful for esophageal atresia with tracheoesophageal fistula even in newborns weighing < 2000 g. However, emergency surgery at the age of 0 day should be cautiously performed due to the risk of anastomotic leakage.

DOI： 10.1007/s00383-024-05724-x

Safe thoracoscopic repair of recurrent congenital diaphragmatic hernia after initial open abdominal repair Open Access

Gohda, Y; Yokota, K; Uchida, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Takimoto, A; Takada, S; Nakagawa, Y; Maeda, T; Guo, YH; Hinoki, A

SURGERY TODAY 54 巻 ( 6 ) 頁： 534 - 539 2024年6月

記述言語：英語出版者・発行元：Surgery Today

Purpose: The optimal surgical approach for recurrent congenital diaphragmatic hernia (CDH) remains controversial. We compared the surgical outcomes of a thoracoscopic approach versus an open abdominal approach for recurrent CDH after initial abdominal open repair. Method: The subjects of this comparative study were patients who underwent open abdominal or thoracoscopic surgery for recurrent CDH following an initial open abdominal repair. Results: Among 166 patients with Bochdalek-type CDH, 15 underwent reoperation for recurrent CDH following an open abdominal repair. Seven patients underwent open abdominal surgery (group O) and eight underwent thoracoscopic surgery (group T). The operative duration was similar for the two groups, with less blood loss (17.2 ml/kg vs. 1 ml/kg, P = 0.001) and fewer intraoperative complications in the T group (n = 6 vs. n = 0 cases, P = 0.001). There was no significant difference in the number of postoperative complications (n = 1 vs. n = 1, P = 1.0) or in the number of patients with a second CDH recurrence (n = 2 vs. n = 1, P = 0.569) between the two groups. Conclusion: Thoracoscopic surgery is preferable to the open surgical approach for recurrent CDH following an initial abdominal open repair.

DOI： 10.1007/s00595-023-02757-y

Scoring system for diagnosis and pretreatment risk assessment of neuroblastoma using urinary biomarker combinations Open Access

Amano, H; Uchida, H; Harada, K; Narita, A; Fumino, S; Yamada, Y; Kumano, S; Abe, M; Ishigaki, T; Sakairi, M; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Karakawa, S; Mitani, Y; Matsumoto, S; Tomioka, Y; Muramatsu, H; Nishio, N; Osawa, T; Taguri, M; Koh, K; Tajiri, T; Kato, M; Matsumoto, K; Takahashi, Y; Hinoki, A

CANCER SCIENCE 115 巻 ( 5 ) 頁： 1634 - 1645 2024年5月

記述言語：英語出版者・発行元：Cancer Science

The urinary catecholamine metabolites, homovanillic acid (HVA) and vanillylmandelic acid (VMA), are used for the adjunctive diagnosis of neuroblastomas. We aimed to develop a scoring system for the diagnosis and pretreatment risk assessment of neuroblastoma, incorporating age and other urinary catecholamine metabolite combinations. Urine samples from 227 controls (227 samples) and 68 patients with neuroblastoma (228 samples) were evaluated. First, the catecholamine metabolites vanillactic acid (VLA) and 3-methoxytyramine sulfate (MTS) were identified as urinary marker candidates through comprehensive analysis using liquid chromatography–mass spectrometry. The concentrations of these marker candidates and conventional markers were then compared among controls, patients, and numerous risk groups to develop a scoring system. Participants were classified into four groups: control, low risk, intermediate risk, and high risk, and the proportional odds model was fitted using the L2-penalized maximum likelihood method, incorporating age on a monthly scale for adjustment. This scoring model using the novel urine catecholamine metabolite combinations, VLA and MTS, had greater area under the curve values than the model using HVA and VMA for diagnosis (0.978 vs. 0.964), pretreatment risk assessment (low and intermediate risk vs. high risk: 0.866 vs. 0.724; low risk vs. intermediate and high risk: 0.871 vs. 0.680), and prognostic factors (MYCN status: 0.741 vs. 0.369, histology: 0.932 vs. 0.747). The new system also had greater accuracy in detecting missing high-risk neuroblastomas, and in predicting the pretreatment risk at the time of screening. The new scoring system employing VLA and MTS has the potential to replace the conventional adjunctive diagnostic method using HVA and VMA.

DOI： 10.1111/cas.16116

A new criterion including the aspartate aminotransferase-to-platelet ratio index and liver and spleen stiffness to rule out varices needing treatment in children with biliary atresia: Modification of the Baveno VII criteria Open Access

Yokoyama, S; Ishizu, Y; Honda, T; Imai, N; Ito, T; Yamamoto, K; Muto, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Takada, S; Nakagawa, Y; Maeda, T; Nakamura, M; Ishigami, M; Uchida, H; Kawashima, H

HEPATOLOGY RESEARCH 54 巻 ( 4 ) 頁： 347 - 357 2024年4月

記述言語：英語出版者・発行元：Hepatology Research

Aims: Biliary atresia (BA) is a congestive biliary disease that develops in the neonatal period or early infancy. It may present with portal hypertension and varices needing treatment (VNT) even after successful Kasai portoenterostomy. This study aimed to stratify the risk of VNT in children and adolescents with BA. Methods: In this prospective cross-sectional study, we measured liver stiffness (LS) and spleen stiffness (SS) by two-dimensional shear wave elastography and checked for VNT endoscopically in 53 patients with BA who attended for follow-up between July 2018 and September 2022. Varices needing treatment were defined as large esophageal varices, esophageal varices of any size with red color signs, and/or gastric varices along the cardia. Results: Twenty-five patients (aged 0–18 years) had VNT. Eighteen patients met the Baveno VI criteria (LS <20 kPa; platelet count >150 000/L) and were deemed to be at low risk of VNT (spared endoscopies) while three had missed VNT (16.7%). Applying the Baveno VII criteria, which combines the SS cut-off value of 40 kPa with the Baveno VI criteria, resulted in five missed VNTs among 22 spared endoscopies (22.7%). A modification of the Baveno VII criteria using the aspartate aminotransferase-to-platelet ratio index (APRI) instead of the platelet count with cut-off values of 25 kPa, 30 kPa, and 1.04 for LS, SS, and APRI, respectively, missed only one VNT (5.0%) among 20 spared endoscopies. Conclusions: A novel diagnostic criterion that combines LS, SS, and APRI reduced the risk of missing VNT to 5% in children and adolescents with BA.

DOI： 10.1111/hepr.13976

Duodenal duplication cyst at the second part of the duodenum with congenital duodenal position anomaly completely resected by laparoscopic partial duodenectomy: a case report Open Access

Nakagawa, Y; Uchida, H; Makita, S; Tainaka, T; Hinoki, A; Shirota, C; Sumida, W; Amano, H; Yasui, A; Kano, Y; Maeda, T; Kato, D; Gohda, Y

SURGICAL CASE REPORTS 10 巻 ( 1 ) 頁： 73 2024年3月

A systematic review of Sandifer syndrome in children with severe gastroesophageal reflux Open Access

Kato, D; Uchida, H; Amano, H; Yokota, K; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Yasui, A; Gohda, Y; Maeda, T; Hinoki, A

PEDIATRIC SURGERY INTERNATIONAL 40 巻 ( 1 ) 頁： 91 2024年3月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Sandifer syndrome (SS), which combines gastroesophageal reflux (GER) and a neurological or psychiatric disorder, is an uncommon condition that often takes a long time to diagnosis. We aimed to systematically review available papers regarding SS. Methods: After presenting our two cases of SS, we systematically reviewed articles published in MEDILINE/PubMed, Cochrane Library, and Web of Science. Results: The meta-analysis included 54 reported cases and 2 of our own cases. Our results showed that all cases achieved symptom improvement with appropriate treatment for GER. Notably, 19 of the 56 cases exhibited anatomical anomalies, such as hiatal hernia and malrotation. Significantly more patients with than without anatomical anomalies required surgery (p < 0.001). However, 23 of the 29 patients without anatomical anomalies (79%) achieved symptom improvement without surgery. Patients who did not undergo surgery had a median (interquartile range) duration to symptom resolution of 1 (1–1) month. Conclusion: The primary care providers should keep SS in the differential diagnosis of patients presenting with abnormal posturing and no apparent neuromuscular disorders. Fundoplication may be effective especially for patients with anatomical anomalies or those whose symptoms do not improve after more than 1 month with nonsurgical treatment.

DOI： 10.1007/s00383-024-05683-3

Laparoscopic Fundoplication in Patients with Ventriculoperitoneal Shunts: A Systematic Review and Our Experience Open Access

Kato, D; Uchida, H; Tainaka, T; Amano, H; Ono, Y; Yasui, A; Shirota, C; Sumida, W; Yokota, K; Makita, S; Takimoto, A; Takada, S; Nakagawa, Y; Gohda, Y; Maeda, T; Hinoki, A

JOURNAL OF LAPAROENDOSCOPIC & ADVANCED SURGICAL TECHNIQUES 34 巻 ( 3 ) 頁： 268 - 273 2024年3月

記述言語：英語出版者・発行元：Journal of Laparoendoscopic and Advanced Surgical Techniques

Background: Data on the outcomes of laparoscopic fundoplication (LF) in patients with ventriculoperitoneal (VP) shunts are limited. Materials and Methods: We retrospectively evaluated the demographic characteristics and outcomes of patients who underwent LF at our institutions between 2014 and 2022. Then, we systematically reviewed articles in MEDILINE/PubMed, Cochrane Library, and Web of Science. Results: There was no significant difference in terms of the outcomes between patients with VP shunt (n = 10) and those without (n = 96) at our institutions. None of the patients presented with shunt trouble after LF. The meta-analysis included four retrospective studies and our institutional data. In total, 605 patients (55 with VP shunt) underwent LF. Furthermore, 2 (3.6%) of 55 patients (1 with infection and 1 with occlusion) had shunt troubles. The conversion and complication rates, operative time, and length of hospital stay did not significantly differ between patients with VP shunt and those without. Conclusions: LF can be safely performed on children with VP shunts and is associated with a low risk of shunt troubles.

DOI： 10.1089/lap.2023.0220

Surgical Strategies for Neonates with Prenatally Diagnosed Congenital Biliary Dilatation

Shirota, C; Hinoki, A; Tainaka, T; Sumida, W; Makita, S; Amano, H; Takimoto, A; Yasui, A; Nakagawa, Y; Liu, JH; Guo, YH; Kato, D; Goda, Y; Maeda, T; Uchida, H

JOURNAL OF PEDIATRIC SURGERY 59 巻 ( 3 ) 頁： 385 - 388 2024年3月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Background: This study aimed to develop a postnatal treatment strategy for infants with prenatally diagnosed congenital biliary dilatation. Methods: We performed a retrospective study of patients with prenatal diagnosed congenital biliary dilatation (CBD), aged <1 year who underwent surgery at our hospital between 2013 and 2023. We classified the patients into two groups, the “early group,” consisting of patients who could not wait for growth, and required early surgery, and the “scheduled group,” consisting of patients who were asymptomatic and could undergo scheduled surgery, and compared them. The parameters for early surgical prediction were AST, ALT, TB, DB, and CRP levels at birth, 1 week, 2 weeks, 1 month, 2 months, and 3 months after birth, and immediately before surgery, as well as the cyst diameter, presence of intrahepatic bile duct dilation, and presence of debris in the common bile duct. Results: During the study period, 15 patients were diagnosed prenatally. The cyst diameter was significantly larger at all points in the early group. Patients with a cyst diameter of >30 mm at birth, intrahepatic bile duct dilatation at birth, and postnatal enlargement of the common bile duct to >30 mm are more likely to develop symptoms early. Blood biochemistry tests showed no significant differences between the two groups. Conclusions: Patients with a cyst diameter >30 mm in the early postnatal period require careful postnatal management and parents should be counseled regarding the high likelihood of their child needing surgery within the first 3 months of life. Level of evidence: Level IV.

DOI： 10.1016/j.jpedsurg.2023.10.045

Update on aortopexy and posterior tracheopexy for tracheomalacia in patients with esophageal atresia

Sumida, W; Yasui, A; Shirota, C; Makita, S; Okamoto, M; Ogata, S; Takimoto, A; Takada, S; Nakagawa, Y; Kato, D; Gohda, Y; Amano, H; Guo, YH; Hinoki, A; Uchida, H

SURGERY TODAY 54 巻 ( 3 ) 頁： 211 - 219 2024年3月

記述言語：英語出版者・発行元：Surgery Today

Despite improving the survival after repair of esophageal atresia (EA), the morbidity of EA repair remains high. Specifically, tracheomalacia (TM) is one of the most frequent complications of EA repair. Continuous positive airway pressure is generally applied for the treatment of TM. However, surgical intervention is required against an apparent life-threatening event or inability to perform extubation for a long period. According to our review, most cases of TM showed symptom improvement after aortopexy. The ratio of the trachea’s lateral and anterior–posterior diameter at the brachiocephalic artery crossing the trachea, which reflects the compression of the trachea by the brachiocephalic artery, is a good indicator of aortopexy. Our finding suggests that most TM cases associated with EA may not be caused by tracheal fragility alone, but may involve blood vessel compression. Posterior tracheopexy (PT) is also an effective treatment for TM. Recently, open or thoracoscopic PT was able to be performed simultaneously with EA repair. In many cases, aortopexy or PT is a safe and effective surgical treatment for TM with EA. Other surgical procedures, such as external stenting, should be considered for patients with diffuse-type TM for whom aortopexy and PT appear relatively ineffective.

DOI： 10.1007/s00595-023-02652-6

10kg 未満の患者に対してもロボット支援腹腔鏡下先天性胆道拡張症手術は安全に行える Open Access

石井宏樹, 内田広夫, 城田千代栄, 田井中貴久, 牧田智, 里見美和, 安井昭洋, 中川洋一, 加藤大幾, 前田拓也, 太田和樹

日本膵・胆管合流異常研究会プロシーディングス 47 巻 ( 0 ) 頁： 66 - 66 2024年

当院におけるロボット支援腹腔鏡下胆道拡張症手術について Open Access

田井中貴久, 城田千代栄, 牧田智, 里見美和, 狩野陽子, 安井昭和, 中川洋一, 加藤大幾, 前田拓也, 石井宏樹, 太田和樹, 天野日出, 檜顕成, 内田広夫

日本膵・胆管合流異常研究会プロシーディングス 47 巻 ( 0 ) 頁： 62 - 63 2024年

食道閉鎖症に対する治療戦略：私達はなぜ胸腔鏡手術を選択するのか Open Access

内田広夫, 田井中貴久, 城田千代栄, 住田亙, 牧田智, 横田一樹, 安井昭洋, 高田瞬也, 中川洋一, 前田拓也, 加藤大幾, 合田陽祐, 郭垚輝, 劉佳慧

日本周産期・新生児医学会雑誌 59 巻 ( 4 ) 頁： 470 - 474 2024年

記述言語：日本語出版者・発行元：一般社団法人日本周産期・新生児医学会

<p>　はじめに</p><p>　名古屋大学小児外科では，食道閉鎖症に対して胸腔鏡下根治術を第一選択としている．アメリカでの現状，meta-analysisに触れながら，当院の治療戦略について簡単に述べる．</p>

DOI： 10.34456/jjspnm.59.4_470

Anastomotic time was associated with postoperative complications: a cumulative sum analysis of thoracoscopic repair of tracheoesophageal fistula in a single surgeon's experience

Guo, YH; Hinoki, A; Deie, K; Tainaka, T; Sumida, W; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Nakagawa, Y; Kato, D; Maeda, T; Amano, H; Kawashima, H; Uchida, H; Shirota, C

SURGERY TODAY 53 巻 ( 12 ) 頁： 1363 - 1371 2023年12月

記述言語：英語出版者・発行元：Surgery Today

Purpose: This study aimed to evaluate the learning curve of thoracoscopic repair of tracheoesophageal fistula (TEF) by a single surgeon using a cumulative sum (CUSUM) analysis. Methods: Prospective clinical data of consecutive Gross type-C TEF repairs performed by a pediatric surgeon from 2010 to 2020 were recorded. CUSUM charts for anastomosis and operating times were generated. The learning curves were compared with the effect of accumulation based on case experience. Results: For 33 consecutive cases, the mean operative and anastomosis times were 139 ± 39 min and 3137 ± 1110 s, respectively. Significant transitions beyond the learning phase for total operating and anastomosis times were observed at cases 13 and 17. Both the total operating time and anastomosis time were significantly faster in the proficiency improvement phase than in the initial learning phase. Postoperative complications significantly decreased after the initial anastomosis learning phase but not after the initial total operating learning phase. Conclusions: Thoracoscopic repair of TEF is considered safe and feasible after 13 cases, where the surgeon can improve their proficiency with the total operation procedure, and 17 cases, which will enable the surgeon to achieve proficiency in anastomosis. Postoperative complications significantly decreased after gaining familiarity with the anastomosis procedure through the learning phase.

DOI： 10.1007/s00595-023-02687-9

Application of indocyanine green fluorescence imaging navigation in pediatric surgery: A single-center review Open Access

Shirota, C; Hinoki, A; Tainaka, T; Sumida, W; Makita, S; Amano, H; Takimoto, A; Yasui, A; Takada, S; Nakagawa, Y; Uchida, H

JOURNAL OF PEDIATRIC SURGERY OPEN 4 巻 2023年12月

出版者・発行元：Journal of Pediatric Surgery Open

Background: Pediatric patients often exhibit congenital disorders and rare diseases. Consequently, pediatric surgeons must frequently perform atypical surgeries, dealing with a great deal of stress. Regarding atypical surgeries, navigation is required to ensure safety and surgical precision. In this study, we report our experience with 213 indocyanine green (ICG) fluorescence navigation (ICG-nav) surgeries and introduce our newly developed protocols of ICG-nav for pediatric surgery. Methods: The route and method of ICG administration, surgery, complications, and efficacy of ICG-nav surgery were retrospectively evaluated. Thereafter, the protocols were established. Results: Stable navigation was possible for chylothorax, cholelithiasis, primary hepatoblastoma lesions, hepatoblastoma lung metastases, nephroblastoma liver metastases, organ blood flow, the thoracic duct, lymphatic malformation, and lung segmentectomy. New protocols were established for these cases. Conclusions: ICG-nav could be performed safely in children given that the total amount of ICG administered was carefully controlled. Furthermore, ICG-nav was a highly applicable navigation surgical technique that could be used for treating a wide variety of diseases. To our knowledge, this is the first report of successful ICG-nav for liver metastases from nephroblastoma presented in this series.

DOI： 10.1016/j.yjpso.2023.100075

Preoperative management comprising tube irrigation using a trans-anal indwelling tube for infants with hirschsprung disease can allow single-stage radical surgery Open Access

Nakagawa, Y; Uchida, H; Hinoki, A; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Yokota, K; Amano, H; Yasui, A; Maeda, T; Kato, D; Gohda, Y

BMC SURGERY 23 巻 ( 1 ) 頁： 333 2023年11月

記述言語：英語出版者・発行元：BMC Surgery

Background: Preoperative management of Hirschsprung’s disease (HD) is currently being conducted with the goal of performing single-stage radical surgery without ileostomy. Methods: We retrospectively reviewed HD cases between 2013 and 2022, as well as their outcomes related to preoperative management. Results: Thirty-nine patients with HD were included in this study, including short-segment HD (30 cases), long-segment HD (4 cases), and total colonic aganglionosis (5 cases). Among these 39 patients, 95% (37 of 39 patients) underwent single-stage radical surgery after management with glycerin enema use (n = 13), irrigation with tube insertion each time irrigation was performed (n = 13), and irrigation using a tube placed in the bowel (n = 11). Conclusions: Preoperative management of patients with HD allowed for single-stage surgery of long-segment HD and total colonic aganglionosis. Cases that could be managed without performing an emergency enterostomy during the neonatal period were managed with irrigation until radical surgery was performed.

DOI： 10.1186/s12893-023-02232-y

Variations of the hepatic artery and bile duct in patients with pancreaticobiliary maljunction: Impact on postoperative outcomes Open Access

Takada, S; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Tainaka, T; Makita, S; Takimoto, A; Nakagawa, Y; Maeda, T

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 30 巻 ( 11 ) 頁： 1241 - 1248 2023年11月

記述言語：英語出版者・発行元：Journal of Hepato Biliary Pancreatic Sciences

Purpose: Preoperative comprehension of the anatomical variations of the hepatic artery and bile duct is essential for safe laparoscopic surgery for pancreaticobiliary maljunction (PBM). This study aimed to investigate the impact of anatomical variations of the hepatic artery and bile duct on surgical technique and postoperative complications. Methods: We conducted a retrospective review of patients with PBM who underwent laparoscopic surgery at our institution between January 2014 and December 2022 to investigate anatomical variations in the hepatic artery and bile duct, surgical technique, and postoperative complications. Results: We included 112 patients with PBM, with a median age of 4 years (interquartile range, 0–55). Overall, 29 of 112 patients had an aberrant right hepatic artery (ARHA) running ventral to the common hepatic duct (CHD), and they underwent hepaticojejunostomy on the ventral side of the ARHA. Additionally, eight of 112 patients had an aberrant posterior hepatic duct (APHD), which was joined to the CHD in all but one case. The presence of APHD was associated with postoperative bile leak occurrence. Conclusion: Performing hepaticojejunostomy ventral to the ARHA is important to prevent complications. Furthermore, APHD may be a risk factor for postoperative bile leak and requires careful bile duct plasty.

DOI： 10.1002/jhbp.1381

Refractory esophageal anastomotic stricture after esophageal atresia surgery improved with retrograde balloon dilatation through gastrostomy followed by laparoscopic fundoplication: a case report Open Access

Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Makita, S; Yokota, K; Amano, H; Yasui, A; Kato, D; Gohda, Y; Maeda, T

SURGICAL CASE REPORTS 9 巻 ( 1 ) 頁： 169 2023年9月

Robotic versus laparoscopic radical surgery for pediatric congenital biliary dilatation: a comparison of surgical outcomes of a single surgeon's initial experience Open Access

Maeda, T; Liu, JH; Uchida, H; Amano, H; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Takimoto, A; Takada, S; Nakagawa, Y; Gouda, A; Guo, YH; Hinoki, A

PEDIATRIC SURGERY INTERNATIONAL 39 巻 ( 1 ) 頁： 261 2023年9月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: This study aimed to clarify the validity of robot-assisted surgery (RAS) for pediatric patients with congenital biliary dilatation (CBD). Methods: We retrospectively compared RAS and laparoscopic surgery (LS) for pediatric CBD performed by the same certified surgeon between 2016 and 2022. Results: We included 6 RAS and 12 LS cases in this study. One case of RAS with laparotomy was excluded from the analysis. The patients in the two groups had comparable ages and body weights. The median surgery duration, the suture time per stitch, and the time to drain removal were 385 min, 145 s, and 5 days in the RAS group and 370 min (p = 0.28), 177 s (p = 0.03), and 6 days (p = 0.03) in the LS group, respectively. The time to create the Roux-en-Y limb was significantly longer in the RAS group. Postoperative complications occurred in one RAS case and in four LS cases. Conclusions: Less anastomotic time per stitch and less time to drain removal suggest that RAS may contribute to accurate suturing and fine intra-pancreatic bile duct dissection. In addition, RAS requiring large movements of forceps in a large surgical field, such as Roux-en-Y creation, is inferior to LS.

DOI： 10.1007/s00383-023-05548-1

Management of Congenital and Postoperative Chylothorax: Use of Thoracoscopic Lymphatic Leak Ligations with Intraoperative ICG Lymphangiography Open Access

Takada, S; Shirota, C; Uchida, H; Amano, H; Hinoki, A; Sumida, W; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Nakagawa, Y; Kato, D; Guo, YH; Tainaka, T

JOURNAL OF PEDIATRIC SURGERY 58 巻 ( 9 ) 頁： 1754 - 1761 2023年9月

記述言語：英語出版者・発行元：Journal of Pediatric Surgery

Background: Congenital chylothorax (CCT) and postoperative chylothorax (POCT) are rare and difficult to treat. We report our treatment strategy and outcomes for chylothorax, including thoracoscopic surgery with indocyanine-green (ICG) near-infrared fluorescence lymphangiography. Methods: A retrospective review of patients with CCT and POCT from 2014 to 2021 was performed. After definitive diagnosis, conservative treatments with octreotide, followed by intravenous steroids as needed, were performed. Patients who were refractory to conservative treatment were transferred to surgical treatment, consisting of thoracoscopic lymphatic leak ligations using ICG intraoperative lymphangiography. The effectiveness of conservative and surgical treatment was then examined. Results: We included 19 cases of CCT and 31 cases of POCT. The 31 POCT patients included 23 of 84 postoperative patients with congenital diaphragmatic hernia (CDH), 7 of 54 postoperative patients with esophageal atresia (EA), and 1 of 3 postoperative patients with lymphatic malformation. The efficacy of conservative treatment was 12/19 for CCT, 22/23 for CDH, and 4/7 for EA. Surgical intervention was performed in 10 patients, and the rate of resolution of chylothorax within 3 weeks after surgery was 90%. Conclusion: Thoracoscopic lymphatic leak ligations with intraoperative ICG lymphangiography are feasible and useful in patients with chylothorax refractory to conservative treatment. Level of evidence: Level IV

DOI： 10.1016/j.jpedsurg.2022.11.018

特集急性虫垂炎:診断,治療,研究複雑性虫垂炎の緊急手術

田井中貴久, 城田千代栄, 住田亙, 横田一樹, 牧田智, 岡本眞宗, 小梛地洋, 長島俊介, 檜顕成, 内田広夫

小児外科 55 巻 ( 7 ) 頁： 751 - 754 2023年7月

IgG4-related disease of duodenal obstruction due to multiple ulcers in a 12-year-old girl Open Access

Kato, D; Uchida, H; Hinoki, A; Sumida, W; Shirota, C; Makita, S; Okamoto, M; Takimoto, A; Takada, S; Nakagawa, Y

BMC PEDIATRICS 23 巻 ( 1 ) 頁： 376 2023年7月

記述言語：英語出版者・発行元：BMC Pediatrics

Background: Immunoglobulin G4-related disease (IgG4-RD) is a systemic inflammatory disease and affected individuals typically present with an increased infiltration of IgG4-positive plasma cells in the pancreas, hepatobiliary tract, and liver but rarely in the gastrointestinal tract. Case presentation: A 12-year-old girl presented with vomiting and poor weight gain. Gastroscopy revealed duodenal stenosis and ulceration. Computed tomography revealed edematous duodenal wall thickening and air-fluid levels on the right side of the duodenum, which suggested duodenal perforation or penetration. She underwent pancreaticoduodenectomy, and IgG4-RD was diagnosed via histopathology. Conclusions: This is the first pediatric case of isolated duodenal IgG4-RD resulting in duodenal obstruction after multiple ulcers. Gastrointestinal IgG4-RD should be among the differential diagnoses of unexplained gastrointestinal obstruction or ulceration even in children.

DOI： 10.1186/s12887-023-04190-z

Case report: Laparoscopic gastrojejunostomy for duodenal atresia with situs inversus and preduodenal portal vein: a report of two cases Open Access

Nakagawa, Y; Sumida, W; Makita, S; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Yokota, K; Amano, H; Yasui, A; Takimoto, A; Kato, D; Maeda, T; Gohda, Y

FRONTIERS IN PEDIATRICS 11 巻頁： 1220393 2023年6月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Congenital duodenal atresia with situs inversus is occasionally accompanied by a preduodenal portal vein (PDPV), which is incidentally diagnosed during surgery. Duodenoduodenostomy is the most common and effective treatment. However, some patients require other anastomoses. Here, we present two cases of laparoscopic gastrojejunostomy for congenital duodenal atresia with situs inversus and PDPV and describe the reason for selecting gastrojejunostomy. The optimal surgical strategy is patient specific and should be determined based on the patient's general and physical condition.

DOI： 10.3389/fped.2023.1220393

Case Report: Retropancreatic fascia hernia protruding into the thoracic cavity through a Bochdalek hernia Open Access

Nakagawa, Y; Maeda, T; Uchida, H; Takada, S; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Amano, H; Takimoto, A; Gohda, Y

FRONTIERS IN PEDIATRICS 11 巻頁： 1149515 2023年6月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Retropancreatic fascia hernia is a novel internal hernia originating from the retropancreatic fascial defect, which subsequently expands toward the dorsal aspect of the pancreatic body and migrates into the retroperitoneal space. We encountered a rare case of concomitant retropancreatic fascia and Bochdalek hernias. Here, we describe the imaging characteristics of this hernia type and its surgical strategies.

DOI： 10.3389/fped.2023.1149515

Preoperative Contrast Examinations Help Determine the Appropriate Cervical Approach for Congenital Gross Type C Esophageal Atresia: A Report of Two Cases Open Access

Nakagawa, Y; Uchida, H; Shirota, C; Tainaka, T; Sumida, W; Amano, H; Takimoto, A; Ogata, S; Takada, S; Maeda, T; Gohda, Y; Guo, YH; Hinoki, A

AMERICAN JOURNAL OF CASE REPORTS 24 巻頁： e938723 2023年6月

記述言語：英語出版者・発行元：American Journal of Case Reports

Objective: Congenital defects/diseases Background: Kluth demonstrated that esophageal atresia/tracheoesophageal fistula (EA/TEF) has several anatomical variations and thus requires a preoperative imaging study to determine the surgical strategy. We routinely perform a contrast examination with iodixanol to assess the location of the TEF and the upper end of the esophageal pouch to determine the most appropriate approach. We herein present two cases of type C EA/TEF who successfully underwent radical surgery by a cervical approach based on the information from the contrast examination. Case Reports: Case 1 was a Japanese boy suspected of type C EA/TEF after birth. A contrast examination with iodixanol showed that a TEF was at the second thoracic vertebra (Th2), as was the upper end of the esophageal pouch. Thus, the patient underwent esophago-esophageal anastomosis and TEF ligation using a cervical approach; the postoperative course was uneventful. Case 2 was also a Japanese boy suspected of type C EA/TEF. A contrast examination showed that the TEF was at Th1-2, as was the upper end of the esophageal pouch. Thus, the patient underwent esophago-esophageal anastomosis and TEF ligation using a cervical approach. The patient suffered from congenital tracheal stenosis and required tracheoplasty. However, there were no apparent complications after the surgery. Conclusions: Here, we used the imaging information to adopt the cervical approach in type C EA/TEF cases and concluded that routine preoperative contrast examinations helped assess the TEF location and upper end of the esophageal pouch without significant complications.

DOI： 10.12659/AJCR.938723

CLINICAL VALIDATION OF NOVEL URINARY MARKERS FOR NEUROBLASTOMA DIAGNOSIS

Amano, H; Uchida, H; Harada, K; Narita, A; Kumano, S; Abe, M; Sakairi, M; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Osawa, T; Taguri, M; Takahashi, Y; Hinoki, A

PEDIATRIC BLOOD & CANCER 70 巻頁： S95 - S95 2023年6月

特集ロボット支援手術ロボット支援下胆管切除術

牧田智, 内田広夫, 住田亙, 檜顕成, 城田千代栄, 田井中貴久, 天野日出, 滝本愛太朗, 高田瞬也, 中川洋一, 合田陽祐, 前田拓也, 郭垚輝, 劉佳慧

小児外科 55 巻 ( 5 ) 頁： 544 - 551 2023年5月

Hemi-circumferential mucosal resection and anastomosis procedure for rectal prolapse following anorectoplasty for anorectal malformations

Takimoto, A; Amano, H; Shirota, C; Sumida, W; Makita, S; Okamoto, M; Ogata, S; Takada, S; Nakagawa, Y; Kato, D; Gohda, Y; Hinoki, A; Uchida, H

SURGERY TODAY 53 巻 ( 5 ) 頁： 628 - 632 2023年5月

記述言語：英語出版者・発行元：Surgery Today

Purpose: Rectal prolapse after radical surgery for anorectal malformations (ARMs) is a common postoperative complication that causes bleeding and stenosis, and sometimes requires surgical treatment. Different surgical techniques have been reported, but most are associated with high recurrence rates and a long postoperative stay. We performed the hemi-circumferential mucosal resection and anastomosis procedure (HCMR) to preserve anal muscle and anal function. Here, we report the success of our minimally invasive surgical approach to correct rectal prolapse in patients with ARMs. Methods: The subjects of this retrospective review were patients who underwent HCMR for rectal prolapse after radical surgery for ARMs between January, 2014 and August, 2021. HCMR involves rectal mucosal resection without muscle plication. Results: A collective 15 HCMR procedures were performed in 10 patients. The median age at repair was 1.8 years (range, 10 months–18 years). The median operation time and postoperative length of stay were 46 min (range, 17–85 min) and 3 days (range, 1–7 days), respectively. The median postoperative observation period was 3 years 4 months (range, 8 months–7 years 10 months) and no complications or recurrences were observed. Conclusions: HCMR is a safe and effective surgical treatment for rectal prolapse after radical operation for ARMs, which is minimally invasive and preserves rectal muscle and function.

DOI： 10.1007/s00595-022-02611-7

Single-cell RNA sequencing of intestinal immune cells in neonatal necrotizing enterocolitis Open Access

Oshima, K; Hinoki, A; Uchida, H; Tanaka, Y; Okuno, Y; Go, Y; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Takimoto, A; Kano, Y; Sawa, S

PEDIATRIC SURGERY INTERNATIONAL 39 巻 ( 1 ) 頁： 179 2023年4月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Necrotizing enterocolitis (NEC) causes fatal intestinal necrosis in neonates, but its etiology is unknown. We analyzed the intestinal immune response to NEC. Methods: Using single-cell RNA sequencing (scRNA-seq), we analyzed the gene expression profiles of intestinal immune cells from four neonates with intestinal perforation (two with NEC and two without NEC). Target mononuclear cells were extracted from the lamina propria of the resected intestines. Results: In all four cases, major immune cells, such as T cells (15.1–47.7%), B cells (3.1–19.0%), monocytes (16.5–31.2%), macrophages (1.6–17.4%), dendritic cells (2.4–12.2%), and natural killer cells (7.5–12.8%), were present in similar proportions to those in the neonatal cord blood. Gene set enrichment analysis showed that the MTOR, TNF-α, and MYC signaling pathways were enriched in T cells of the NEC patients, suggesting upregulated immune responses related to inflammation and cell proliferation. In addition, all four cases exhibited a bias toward cell-mediated inflammation, based on the predominance of T helper 1 cells. Conclusion: Intestinal immunity in NEC subjects exhibited stronger inflammatory responses compared to non-NEC subjects. Further scRNA-seq and cellular analysis may improve our understanding of the pathogenesis of NEC.

DOI： 10.1007/s00383-023-05461-7

Rare case of a right Bochdalek hernia with retroperitoneal prolapse of organs into the thoracic cavity in infancy: A case report

Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Makita, S; Amano, H; Masamune, O; Takimoto, A; Ogata, S; Takada, S; Kato, D; Gohda, Y; Guo, YH

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 16 巻 ( 2 ) 頁： 284 - 288 2023年4月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

We report an extremely rare case of a right Bochdalek hernia with a sac, in which the retroperitoneal and intra-abdominal organs prolapsed into the thoracic cavity at the same time. The patient was a 7-month-old female with no comorbidities. She presented with cough and fever, and chest radiography revealed a right diaphragmatic hernia. Computed tomography showed that the right kidney, intestine, colon, and liver had prolapsed into the thoracic cavity. The patient underwent thoracoscopic surgery, which showed that the abdominal and retroperitoneal organs prolapsed into the thoracic cavity through the Bochdalek hernia. The herniated organs were spontaneously reduced using thoracoscopic insufflation. The defect hole was closed with artificial mesh. We adopted a thoracoscopic approach, in terms of easy reduction of herniated organs and accurate evaluation of the hernia orifice, which was useful.

DOI： 10.1111/ases.13139

Laparoscopic bile duct plasty for hilar bile duct stenosis (HBDS) in patients with congenital biliary dilatation: Diagnosis of HBDS by preoperative MRCP and laparoscopic strategy to relieve HBDS

Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Yasui, A; Takimoto, A; Guo, YH

JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 30 巻 ( 4 ) 頁： 473 - 481 2023年4月

記述言語：英語出版者・発行元：Journal of Hepato Biliary Pancreatic Sciences

Background/Purpose: Congenital biliary dilatation (CBD) is a disease associated with pancreaticobiliary maljunction. The most frequent postoperative complication is intrahepatic stones, which are caused by hilar bile duct stenosis (HBDS). Methods: We retrospectively reviewed the records of patients who underwent primary surgery for CBD between 2013 and 2021. We evaluated images and videos of HBDS, the laparoscopic technique of releasing the stenosis, and its occurrence rate and compared intraoperative bile duct findings with those of preoperative magnetic resonance cholangiopancreatography (MRCP). Results: There were 87 CBD cases in this study. HBDS occurred in 52% and preoperative MRCP for HBDS showed a 96% sensitivity and 74% specificity in this study. Bile duct plasty was performed in 45% of the cases and videos demonstrated typical methods of laparoscopic bile duct plasty. The mid- to long-term complications were hepatolithiasis in three patients, anastomotic site stricture in three, and postoperative obstruction in two. Conclusions: Our study revealed that preoperative imaging studies are useful for the prediction of HBDS. Our laparoscopic meticulous probing method for finding BDS reveals more intrahepatic BDS through magnification. Therefore, this may reduce the incidence of intrahepatic stones. Preoperative imaging and intraoperative findings can be complemented to plan management that reduces long-term complications.

DOI： 10.1002/jhbp.1235

Laparoscopic internal intestinal drainage of bile lakes in a patient with recurrence of jaundice after laparoscopic revision of Kasai portoenterostomy for biliary atresia: A case report

Gohda, Y; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Makita, S; Okamoto, M; Ogata, S; Takimoto, A; Takada, S; Nakagawa, Y; Kato, D; Guo, YH

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 16 巻 ( 2 ) 頁： 275 - 278 2023年4月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

Bile lake, of the postoperative complications after Kasai portoenterostomy (PE) for biliary atresia, causes cholangitis that may induce progressive fibrosis of the liver. Standard treatment for bile lakes has not yet been established, but there are reports that surgical internal intestinal drainage for bile lakes effectively prevents cholangitis and maintains jaundice-free status. In this case, insertion of the percutaneous transhepatic biliary drainage into the bile lake allowed continuous drainage of large volumes of bile juice. However, reoperation following laparotomy increases the surgical risk of subsequent liver transplantation due to postoperative adhesion. Laparoscopic surgery was selected for the patient who was likely to require liver transplantation in the future. In this case, laparoscopic internal intestinal drainage of bile lakes was performed safely by a Cavitron ultrasonic surgical aspirator for the recurrence of jaundice after laparoscopic revision of PE. Cholangitis and jaundice were rapidly resolved after this surgical procedure.

DOI： 10.1111/ases.13133

Laparoscopic Duodenal-Caudal Detachment Method: Early Experience of a Novel Technique for Malrotation with Volvulus in Neonates

Takimoto, A; Amano, H; Sumida, W; Shirota, C; Yokota, K; Makita, S; Okamoto, M; Ogata, S; Takada, S; Nakagawa, Y; Kato, D; Goda, Y; Hinoki, A; Uchida, H

JOURNAL OF LAPAROENDOSCOPIC & ADVANCED SURGICAL TECHNIQUES 33 巻 ( 2 ) 頁： 220 - 225 2023年2月

記述言語：英語出版者・発行元：Journal of Laparoendoscopic and Advanced Surgical Techniques

Purpose: A laparoscopic approach for malrotation is feasible and safe in hemodynamically stable neonates without intestinal necrosis; however, volvulus is associated with recurrence and conversion. We developed a novel approach using a laparoscopic duodenal-caudal detachment method to perform the Ladd procedure for neonates with volvulus under the limited view of laparoscopy. This study presents the results, effectiveness, and details of the method. Materials and Methods: In the laparoscopic duodenal-caudal detachment method, we first detached the adhesions around the duodenum, including the Ladd's band. After the adhesions were completely removed, the duodenum was freely drawn caudally, leading to the release of torsion. We retrospectively reviewed the medical records of patients who underwent surgery for malrotation of the volvulus at 30 days of age between January 2014 and September 2021. Results: Seven neonates underwent the laparoscopic duodenal-caudal detachment method and 13 underwent the open Ladd procedure. The new technique was performed in all 7 patients, and there were no conversions or recurrences. The operation time was significantly longer in the laparoscopic procedure group (55 minutes versus 111 minutes; P < .01). Conclusions: Our detorsion method, involving an initial incision of the Ladd's band, is safe and effective for neonates and may lead to an improvement in the conversion rates.

DOI： 10.1089/lap.2022.0390

Endoscopic injection sclerotherapy with polidocanol for cardiac varices in children and adolescents Open Access

Yokoyama, S; Ishizu, Y; Honda, T; Imai, N; Ito, T; Yamamoto, K; Hinoki, A; Sumida, W; Shirota, C; Tainaka, T; Makita, S; Yokota, K; Uchida, H; Ishigami, M

ARCHIVES DE PEDIATRIE 30 巻 ( 2 ) 頁： 109 - 112 2023年2月

記述言語：英語出版者・発行元：Archives De Pediatrie

Background: Like esophageal varices, cardiac varices are often treated with endoscopic variceal ligation (EVL). However, we previously reported that EVL for cardiac varices may be associated with a high risk of rebleeding from the ulcer if the O-ring spontaneously drops off early. The efficacy and safety of para-variceal endoscopic injection sclerotherapy (EIS) with polidocanol for the treatment of cardiac varices in children and adolescents were evaluated. Methods: Eleven patients under 18 years of age with portal hypertension who underwent para-variceal EIS with polidocanol for cardiac varices with red signs, which were considered to be at high risk of bleeding, were retrospectively reviewed. Results: One session of para-variceal polidocanol-EIS was performed for each of the 11 patients. One patient experienced temporary hypoxia due to aspiration of saliva when the tracheal intubation tube was removed after the procedure but recovered by endotracheal suctioning; there were no other adverse events. In six of the eight cases in which efficacy could be evaluated, eradication of cardiac varices was achieved. Conclusion: Para-variceal polidocanol-EIS may be considered instead of EVL for small cardiac varices with red signs in pediatric patients with cardiac varices.

DOI： 10.1016/j.arcped.2022.11.016

A new type of retropancreatic fascia hernia in the supramesocolic space preoperatively misdiagnosed as a diaphragmatic hernia: report of two cases Open Access

Nakagawa, Y; Uchida, H; Makita, S; Yokota, K; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Amano, H; Ogata, S; Takimoto, A; Takada, S; Maeda, T; Gohda, Y

SURGICAL CASE REPORTS 9 巻 ( 1 ) 頁： 5 2023年1月

Laparoscopic restorative proctocolectomy with ileal-J-pouch anal canal anastomosis without diverting ileostomy for total colonic and extensive aganglionosis is safe and feasible with combined Lugol's iodine staining technique and indocyanine green fluorescence angiography Open Access

Nakagawa, Y; Yokota, K; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Amano, H; Takimoto, A; Ogata, S; Takada, S; Maeda, T; Gohda, Y

FRONTIERS IN PEDIATRICS 10 巻頁： 1090336 2023年1月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Background: We present the surgical technique and outcomes of reduced-port laparoscopic restorative proctocolectomy with ileal-J-pouch anal canal anastomosis (IPACA) without diverting ileostomy for total colonic and extensive aganglionosis (TCA+). Methods: We retrospectively reviewed TCA+ cases between 2014 and 2022. Preoperative ileostomy was performed when transanal bowel irrigation was ineffective. Radical surgery for TCA+ was performed at approximately 6 kg. The surgery was performed using laparoscopy through a multi-channel trocar with or without an additional 3-mm trocar and IPACA reconstruction with indocyanine green fluorescence angiography (ICG) to assess anastomotic perfusion and Lugol's iodine staining to visualize the surgical anal canal. Results: Ten patients with TCA+ were included. Ileostomy was performed in seven cases. The median operation time and blood loss were 274.5 min and 20 ml, respectively. No significant postoperative complications were found. All patients experienced frequent liquid stools and perianal excoriation in the early postoperative period, requiring anti-flatulence or codeine. The median follow-up period was 3.5 years. Three patients required irrigation management 1 year postoperatively, and the others defecated a median of 3.5 times per day. The median Kelly's clinical score was 5 in 5 patients aged >4 years. Conclusion: Reduced-port surgery, combined with Lugol's iodine staining and ICG, was safe, feasible, and had cosmetically and clinically acceptable mid-term outcomes.

DOI： 10.3389/fped.2022.1090336

Laparoscopic closure of Roux limb perforation during double-balloon endoscopic retrograde cholangiography with laparoscopy-assisted endoscopic hepatolithectomy 30 years after congenital biliary dilatation radical surgery: A case report

Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Makita, S; Masamune, O; Ogata, S; Takimoto, A; Takada, S; Kato, D; Gohda, Y

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 16 巻 ( 1 ) 頁： 118 - 122 2023年1月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

We report a case of hepatolithiasis 30 years after congenital biliary dilatation (CBD) surgery. A 31-year-old woman presented with fever and epigastric pain. She had a history of radical surgery for type I CBD at the age of 1 year and had no significant symptoms for approximately 30 years after surgery. Laboratory and imaging results showed hepatolithiasis at the common trunk of segments II and III with cholangitis. She was admitted to our hospital for antibiotics and underwent double-balloon endoscopic retrograde cholangiography (DBERC) to treat the hepatolithiasis. Roux-limb jejunum was perforated during DBERC; hence, emergent laparoscopic perforation site closure and simultaneous endoscopic lithotomy through the Roux-limb jejunum with exteriorization via umbilical incision were performed. The postoperative course was uneventful, and the patient was discharged without any complications.

DOI： 10.1111/ases.13116

Retroperitoneoscopic resection of a large paraganglioma surrounded by the right diaphragmatic crus on the dorsal side of the inferior vena cava: A pediatric case report

Takimoto, A; Sumida, W; Shirota, C; Makita, S; Okamoto, M; Ogata, S; Takada, S; Nakagawa, Y; Kato, D; Goda, Y; Hinoki, A; Uchida, H

ASIAN JOURNAL OF ENDOSCOPIC SURGERY 16 巻 ( 1 ) 頁： 131 - 134 2023年1月

記述言語：英語出版者・発行元：Asian Journal of Endoscopic Surgery

Pheochromocytomas and paragangliomas are rare tumors. A 10 year-old girl was brought to the emergency room with complaints of sudden vomiting and convulsions, and was initially diagnosed with hypertensive encephalopathy. Magnetic resonance imaging and computed tomography scan showed a large mass (6 × 3 × 3 cm) on the dorsal side of the inferior vena cava, surrounded by the right diaphragmatic crus, and closely attached to the aorta. Blood noradrenaline, urinary normetanephrine, and noradrenaline levels were elevated. The final diagnosis was retroperitoneal paraganglioma, then, surgery was contemplated. The location of the liver and great vessels in front of the tumor made the commonly performed transabdominal approach complicated. Therefore, retroperitoneoscopic surgery was preferred for safer resection, with better visualization in a sufficient space with less risk of damaging the surrounding organs. The retroperitoneoscopic approach is a good indication for tumors located behind the great vessels.

DOI： 10.1111/ases.13119

The presence of high-risk varices after sclerotherapy in biliary atresia Open Access

Yokoyama, S; Ishizu, Y; Honda, T; Imai, N; Ito, T; Yamamoto, K; Shirota, C; Tainaka, T; Sumida, W; Makita, S; Takimoto, A; Nakagawa, Y; Takada, S; Ishigami, M; Uchida, H; Kawashima, H

PEDIATRICS INTERNATIONAL 65 巻 ( 1 ) 頁： e15454 2023年1月

記述言語：英語出版者・発行元：Pediatrics International

Background: Esophagogastric varices (EGVs) may develop as a result of portal hypertension in children with biliary atresia (BA). Although endoscopic injection sclerotherapy (EIS) with ethanolamine oleate (EO) is reported useful for children, risk factors associated with the presence of high-risk EGVs after treatment remain unknown. Methods: The subjects were BA patients under 15 years of age who underwent EO-EIS. We retrospectively reviewed a total of 28 treatment sessions of EGVs with red signs and those larger than F2, which were considered to be at high risk of bleeding. Survival analysis was performed for the presence of high-risk EGVs at the time of follow-up endoscopy as the occurrence of an event. Results: Univariate analysis showed a significantly increased risk of the presence of high-risk EGVs post-EO-EIS in patients with increased liver stiffness (LS) and Mac-2 binding protein glycan isomer (M2BPGi), with hazard ratios of 1.48 and 1.15, respectively. The median presence-free period was significantly shorter in the LS ≥ 2.8 m/s patients than in those with LS <2.8 m/s (189 vs. 266 days). Similarly, the median presence-free period was significantly shorter in patients with M2BPGi ≥ 4.0 than in those with M2BPGi < 4.0 (182 vs. 203 days). The results of multivariate analysis revealed that the risk of the presence of high-risk EGVs was significantly higher only in the high-LS group, with a hazard ratio of 2.76. Conclusions: Increased LS is associated with risk of the presence of high-risk EGVs following EO-EIS in children with BA.

DOI： 10.1111/ped.15454

先天性十二指腸閉鎖症・狭窄症に合併した膵・胆管合流異常の4例 Open Access

牧田智, 内田広夫, 檜顕成, 寺脇幹, 城田千代栄, 田井中貴久, 住田亙, 横田一樹, 天野日出, 滝本愛太朗, 安井昭洋, 中川洋一, 加藤大幾, 合田陽祐, 前田拓也, 郭垚輝, 劉佳慧

日本膵・胆管合流異常研究会プロシーディングス 46 巻 ( 0 ) 頁： 52 - 53 2023年

AI画像解析による内視鏡外科手術手技のビデオ評価及び手術支援システムの構築 Open Access

安井昭洋, 内田広夫, 森健策, 石田昇平, 出家亨一, 檜顕成, 城田千代栄, 小田昌宏, 林雄一郎

生体医工学 Annual61 巻 ( Abstract ) 頁： 127_2 - 127_2 2023年

記述言語：日本語出版者・発行元：公益社団法人日本生体医工学会

<p>【はじめに】術後成長発達する小児患者にとって、低侵襲手術は非常に重要である。しかし患者数は限られているため、しっかりとした手術を行うためにoff the job-training(OJT)が重要である。さらにOJTでの効率的な手技獲得には、手技を客観的に評価しfeed backを行うシステムが必須である。また安全で効率的な内視鏡手術を行うためには、臓器の位置関係の把握が必要であるため、術中ナビゲーションは重要な要件となる。これらの課題に対して、AIを用いた内視鏡手技評価および手術支援システムの構築に着手しており現状の成果を報告する。【方法と結果】食道閉鎖症モデルを用いた吻合手技を被験者に課し、各被験者の手技を最初に人の目で「check 表」「エラー項目」「時間」を用いて評価した。次にビデオから検出した鉗子の動きと人が判定した手技優劣の関係性をAIで学習させ、上位88％・下位95％の精度で手技優劣が自動判定可能となった。この結果を解析することで今まで必要だった50項目以上の肉眼チェックが、わずか７項目チェックするだけで手技の優劣を判断できることが明らかになった。現在食道閉鎖症の手術画像を用いて、食道・迷走神経・気管を深層学習させ、各種構造物の自動認識を進めている。【まとめ】AI画像解析により内視鏡手技の優劣をビデオで判定可能となった。この結果から新たに効率的な手技判断基準を定めることができた。術中ナビゲーションは現在精度のさらなる向上を目指している。</p>

DOI： 10.11239/jsmbe.annual61.127_2

Refractory tracheoesophageal fistula treated using multi-stage surgery: A case report Open Access

Nakagawa, Y; Makita, S; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Amano, H; Okamoto, M; Takimoto, A; Ogata, S; Takada, S; Kato, D; Gohda, Y; Guo, YH

FRONTIERS IN PEDIATRICS 10 巻頁： 1053154 2022年12月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

A tracheoesophageal fistula (TEF) recurs in approximately 2%–13% of cases of esophageal atresia with TEF that are treated surgically. Currently, there is no consensus on the most effective treatment to prevent recurrent TEF (RTEF). Herein, we present a patient with type C esophageal atresia who underwent thoracoscopic esophago-esophageal anastomosis and TEF repair at 2 days old. However, RTEFs were observed at ages 3, 6, and 11 months, and thoracoscopic TEF repairs using a pleural patch, fascia lata graft, and pectoralis major myocutaneous (PMMC) flap were performed, respectively. A fourth recurrence led to mediastinitis, shock liver, disseminated intravascular coagulopathy, and a compromised respiratory status. Hence, laparoscopic esophageal transection was first performed to improve the respiratory condition by preventing the regurgitation of gastric contents. Once the patient was stable, a subtotal esophageal resection with TEF closure followed by gastric tube reconstruction was performed. In conclusion, we encountered a case of refractory RTEF that was repaired four times using various techniques, including a fascia lata graft and PMMC flap. However, TEF still recurred after these four operations. The final surgical strategy involved an esophageal transection as a palliative therapy, which improved the respiratory condition, followed by closure of the TEF and subtotal esophageal resection. Finally, esophageal reconstruction using a gastric tube after the complete remission of inflammation was effective. This multi-stage surgery was considered the only choice to rescue the patient and effectively prevent another recurrence.

DOI： 10.3389/fped.2022.1053154

Preoperative imaging contributes to pathologically complete resection of the urachal remnant by determining an appropriate surgical approach without unnecessary and excessive surgical invasion: a retrospective study Open Access

Nakagawa, Y; Sumida, W; Amano, H; Uchida, H; Hinoki, A; Shirota, C; Makita, S; Okamoto, M; Ogata, S; Takimoto, A; Takada, S; Kato, D; Gohda, Y

BMC UROLOGY 22 巻 ( 1 ) 頁： 207 2022年12月

記述言語：英語出版者・発行元：BMC Urology

Background: The urachus is an embryonic structure that connects the bladder to the allantois during early embryonic development. Occasionally, it fails to disappear at birth, leading to a case of urachal remnant (UR). This study aimed to determine whether our policy for selecting an appropriate UR resection approach is valid. We performed preoperative imaging to examine whether UR continued toward the bladder apex. If so, the UR and bladder apex were excised using the trans-umbilical approach, in addition to laparoscopy, if necessary. If preoperative imaging indicated that the UR ended near the umbilicus, the UR from the umbilicus to the duct end was resected. Pathological evaluations were performed to determine the appropriateness of the surgical approach indicated by preoperative imaging. Methods: We retrospectively reviewed pediatric patients with UR who underwent surgery between 2015 and 2021. Their background characteristics and surgical outcomes were evaluated. Results: Twenty patients with UR were included (median age, 7 [interquartile range, 2–10.25] years). UR continued toward the bladder apex in 10 patients and ended near the umbilicus in 10 patients. Urachus tissue at the bladder site was observed when the UR and bladder apex were excised. When UR was resected from the umbilicus to the duct end, urachus tissue was not pathologically detected at the resection margin. Conclusion: Our policy results in complete resection without excessive surgical invasion.

DOI： 10.1186/s12894-022-01153-x

Laparoscopic revision of Kasai portoenterostomy after initial laparoscopic portoenterostomy in patients with biliary atresia: a limited but positive effect on native liver survival Open Access

Kato, D; Uchida, H; Amano, H; Hinoki, A; Shirota, C; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Nakagawa, Y

PEDIATRIC SURGERY INTERNATIONAL 38 巻 ( 12 ) 頁： 1821 - 1827 2022年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: It is important for patients with biliary atresia (BA) to retain the native liver after Kasai portoenterostomy (PE). Laparoscopic PE (Lap-PE) is standard, whereas laparoscopic revision of PE (Lap-revision) is performed as needed. We report the medium-term outcomes of Lap-revision. Methods: We retrospectively reviewed the demographics and outcomes of 63 patients who underwent Lap-PE between 2013 and 2021. Indications for revision included recurrent jaundice, repeat cholangitis, and persistent jaundice with temporary biliary excretion following the initial PE. We compared liver transplantation (LT) data of patients who underwent Lap-revision with those of patients who did not. Results: Lap-revision was performed in 20 patients. Of those 17 (excluding the two who were jaundice-free before the age of 1, and the one who underwent open conversion for bleeding), 11 (65%) were jaundice-free 1 year after Lap-revision. The surgical parameters of LT did not differ between patients who underwent Lap-revision and those who did not. Conclusion: Lap-revision for patients with BA had a limited but positive effect on native liver survival and did not adversely affect subsequent LT. Therefore, Lap-revision could be second-line standard therapy in patients with BA who have demonstrated biliary drainage at least once after initial PE.

DOI： 10.1007/s00383-022-05235-7

Adding a spur valve to laparoscopic portoenterostomy for patients with biliary atresia can achieve a high jaundice clearance rate and lower the number of episodes of cholangitis

Yasui, A; Hinoki, A; Amano, H; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Nakagawa, Y; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 38 巻 ( 12 ) 頁： 1881 - 1885 2022年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: This study aimed to evaluate the efficacy of adding a spur valve to laparoscopic portoenterostomy for patients with biliary atresia. Methods: We retrospectively reviewed the records of all patients diagnosed with biliary atresia (BA) who underwent laparoscopic portoenterostomy (Lap-PE) between 2013 and 2021. The patients were divided into two groups: Lap-PE with a spur valve (spur group) and without it (control group). Perioperative management was the same in both groups. We compared patient backgrounds and clinical outcomes, including jaundice clearance and the number of postoperative cholangitis episodes. Results: Of 63 patients reviewed, 16 received a spur valve. There were no statistically significant differences in the patient backgrounds between the groups. All patients in the spur group achieved jaundice clearance. The number of postoperative cholangitis episodes one year after surgery was significantly lower in the spur group than in the control group (1 [0–3] vs. 3 [0–9], p = 0.04). The jaundice-free survival rate with the native liver at one year after surgery was significantly higher in the spur group (100% vs. 53%, p = 0.01). Conclusions: Adding a spur valve during Lap-PE significantly lowered the number of cholangitis episodes 1 year after surgery.

DOI： 10.1007/s00383-022-05230-y

Biochemical markers to predict the development of gastrointestinal bleeding and esophageal varices after portoenterostomy in biliary atresia Open Access

Sumida, W; Tainaka, T; Shirota, C; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Nakagawa, Y; Kato, D; Yokoyama, S; Ishizu, Y; Amano, H; Guo, YH; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 38 巻 ( 12 ) 頁： 1799 - 1805 2022年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Gastrointestinal bleeding (GIB) due to esophageal varices (EV) is one of the factors that negatively impact native liver survival of patients with biliary atresia (BA). Gastrointestinal fibroscopy (GIF) is usually used to determine the presence of EVs; however, it requires general anesthesia. The aim of this study is to search for markers in blood tests obtained during routine check-ups that can predict the development of GIB. Methods: Data of patients with BA who underwent portoenterostomy at our hospital from 2014 to 2020 were retrospectively reviewed. The patients’ data were assigned to three groups according to specific time points: Group B, which included data at GIB; Group NB-T, which included data at GIF and EV treatment; and Group NB-NT, which included data at GIF without treatment. The data in Group B were compared to those of other groups. Results: In our study, GIB occurred in 11 patients, and 12 cases and 8 cases were classified into Groups NB-NT and NB-T, respectively. Compared with the other groups, only ChE and M2BPGi in Group B showed statistically significant differences. Conclusions: ChE and M2BPGi are useful for predicting GIB.

DOI： 10.1007/s00383-022-05243-7

Combined negative pressure wound therapy with irrigation and dwell time and artificial dermis prevents infection and promotes granulation formation in a ruptured giant omphalocele: a case report Open Access

Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Makita, S; Amano, H; Okamoto, M; Takimoto, A; Ogata, S; Takada, S; Kato, D; Gohda, Y

BMC PEDIATRICS 22 巻 ( 1 ) 頁： 680 2022年11月

記述言語：英語出版者・発行元：BMC Pediatrics

Background: Omphalocele is a congenital abdominal wall defect of the umbilical cord insertion site. A giant omphalocele, with a fascial defect > 5 cm in diameter and/or containing > 50% of the liver within the hernia sac, can be challenging for pediatric surgeons. Recently, negative pressure wound therapy has been reported as an effective management for giant omphaloceles; however, it is not recommended for an infected wound with necrotic tissue as it may exacerbate infection. We adopted negative pressure wound therapy with irrigation and dwell time (NPWTi-d) for a case of a ruptured giant omphalocele. Artificial membranes, followed by artificial dermis, were used to promote fibrous capsule formation, and then NPWTi-d was used to promote granulation while controlling infection. However, studies have not been conducted regarding NPWTi-d for ruptured giant omphaloceles; hence, we present our treatment experience with NPWTi-d for a giant omphalocele. Case presentation: The patient was a boy born at 38 weeks and 3 days of gestation, weighing 1896 g. He was diagnosed with a ruptured giant omphalocele with a total liver and intestine defect hole of 10 cm × 10 cm. The patient underwent silo placement using an artificial mesh, followed by plicating the artificial mesh at 4 days of age. The herniated viscera were gradually reduced into the abdominal cavity; however, the defect size was still large. Hence, a collagen-based artificial dermis was patched on the defect hole. After creating a fresh and smooth granulated tissue, NPWTi-d was applied at 33 days of age to promote granulation and control infection. We used the 3 M™ V.A.C.® Ulta Therapy Unit with 3 M™ VeraFlo™ therapy. NPWTi-d was stopped at 60 days of age when the granulation tissue was well formed including at the artificial dermis site. The wound was managed with prostandin ointment and appropriate debridement, resulting in complete epithelialization at 5 months of age. Conclusions: Artificial membranes followed by artificial dermis were used to promote a fibrous capsule and artificial dermis granulation, which protects against organ damage. NPWTi-d achieved better control of infection and promoted wound healing. NPWTi-d combined with artificial dermis can effectively treat ruptured giant omphaloceles.

DOI： 10.1186/s12887-022-03755-8

Case report: A giant bilateral inguinal hernia requiring artificial mesh and multi-stage surgery in infancy; hernioplasty with silo placement to prevent acute compartment syndrome Open Access

Nakagawa, Y; Makita, S; Uchida, H; Hinoki, A; Shirota, C; Sumida, W; Amano, H; Okamoto, M; Takimoto, A; Yasui, A; Ogata, S; Takada, S; Kato, D; Gohda, Y; Yaohui, G

FRONTIERS IN PEDIATRICS 10 巻頁： 1030934 2022年11月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Hernioplasty for giant inguinal hernias can cause abdominal compartment syndrome (ACS) in adults but rarely does in infants. We encountered a case of a giant bilateral inguinal hernia in infancy complicated by ACS after hernioplasty. Silo placement via a skin incision effectively treated ACS, after which the abdominal wall was safely closed. Hernioplasty performed early in the clinical course can help expand the abdominal cavity and avoid ACS. Thus, hernioplasty should be performed earlier if the hernia size in the flank space gradually increases.

DOI： 10.3389/fped.2022.1030934

Intraoperative indocyanine green fluorescence cholangiography can rule out biliary atresia: A preliminary report Open Access

Shirota, C; Hinoki, A; Togawa, T; Ito, S; Sumida, W; Makita, S; Amano, H; Takimoto, A; Takada, S; Okamoto, M; Nakagawa, Y; Kato, D; Uchida, H

FRONTIERS IN PEDIATRICS 10 巻頁： 1005879 2022年11月

記述言語：英語出版者・発行元：Frontiers in Pediatrics

Background: The prognosis of BA is known to be poor if definitive surgery is performed too late. Therefore, excluding BA as a diagnosis at an early stage is crucial. Conventional cholangiography requiring cannulation through the gallbladder may be unnecessarily invasive for patients, especially when ruling out BA. Therefore, a less invasive alternative such as indocyanine green (ICG) cholangiography, which does not require cannulation, should be established. In this study, we focused on excluding BA and confirmed the usefulness of intravenous ICG fluorescence cholangiography. To the best of our knowledge, this is the first preliminary study to report the use of intravenous ICG cholangiography for BA exclusion. Methods: The study participants were patients who underwent liver biopsy and intraoperative cholangiography after they were suspected to have BA, between 2013 and 2022. ICG fluorescence cholangiography was performed on all patients who provided informed consent. Results: During the study period, 88 patients underwent a laparoscopic liver biopsy and cholangiography. Among them, 65 (74%) were diagnosed with BA and underwent a subsequent laparoscopic Kasai portoenterostomy. BA was ruled out intraoperatively in 23 patients. Of the 23 patients in whom BA was ruled out, 14 underwent ICG cholangiography, 11 had gallbladder (GB) fluorescence, and 9 had both GB and common bile duct (CBD) fluorescence. Conventional cholangiography was very difficult in 2 of 23 cases: in 1 case, cannulation of the atrophic gallbladder was impossible, and cholecystectomy was indicated after multiple attempts; in 1 case, upstream cholangiography was not possible. In both cases, ICG fluorescence cholangiography successfully imaged the CBD and the GB. Conclusions: In conclusion, intravenous ICG fluorescence cholangiography might be a useful and less invasive diagnostic procedure that can rule out BA in infants.

DOI： 10.3389/fped.2022.1005879

Circumumbilical incision for neonatal abdominal surgery: additional skin incision when there is difficulty in manipulating the intestine Open Access

Nakagawa, Y; Hinoki, A; Amano, H; Uchida, H; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Kato, D

NAGOYA JOURNAL OF MEDICAL SCIENCE 84 巻 ( 4 ) 頁： 716 - 722 2022年11月

記述言語：英語出版者・発行元：Nagoya Journal of Medical Science

This study aimed to evaluate the safety and effectiveness of circumumbilical incision (CUI) for neonates requiring intestinal anastomosis. Seventy neonates requiring intestinal anastomosis at our institution between 2003 and 2020 were included in this retrospective case-control study. Patients were classified into the CUI (25 patients: 36%) and transverse incision (TI) groups (45 patients: 64%). Postoperative complications and surgical outcomes were compared between the two groups. Intestinal perforation at the non-anastomotic site occurred significantly more often in the CUI group than in the TI group (3 patients: 12%, and 0 patients: 0%, respectively (p = 0.042)). There were no between-group differences regarding anastomotic leakages, anastomotic strictures, time to enteral feeding, operative time, and blood loss. Neonatal intestinal surgery employing CUI might be associated with increased intestinal perforation at the non-anastomotic site. Hesitating to enlarge the skin incision to maintain favorable cosmetic outcomes might cause severe injury to the delicate neonatal intestine during the surgical procedure owing to the restricted surgical field. When performing CUI, we suggest that the skin incision should be extended without hesitation whenever there is difficulty in manipulating the intestine.

DOI： 10.18999/nagjms.84.4.716

特集小児外科を取り巻く最新テクノロジー Hirschsprung病に対する機械学習を用いた病理診断支援システムの開発

天野日出, 木村和恵, 今井佑太, 加藤竜司, 中澤温子, 城田千代栄, 滝本愛太朗, 住田亙, 牧田智, 岡本眞宗, 安井昭洋, 高田瞬也, 中川洋一, 加藤大幾, 檜顕成, 内田広夫

小児外科 54 巻 ( 10 ) 頁： 1007 - 1011 2022年10月

Laparoscopic definitive surgery for congenital biliary dilatation with aggressive hilar bile ductoplasty and complete resection of the intrapancreatic bile duct in pediatric patients is safe and effective, comparable to open surgery

Tainaka, T; Shirota, C; Hinoki, A; Sumida, W; Yokota, K; Makita, S; Amano, H; Tanaka, Y; Uchida, H

SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 36 巻 ( 10 ) 頁： 7352 - 7359 2022年10月

記述言語：英語出版者・発行元：Surgical Endoscopy

Background: After surgery for congenital biliary dilatation (CBD), hilar and hepatic bile duct stenosis and intrapancreatic bile duct remnants can cause many postoperative complications. We investigated the efficacy of laparoscopic surgery with aggressive bile ductoplasty and complete excision of the intrapancreatic bile duct in CBD patients compared to open surgery. Methods: Pediatric patients who underwent surgery for CBD at our institution between 2006 and 2020 were divided into two groups: laparoscopic surgery (Lap group) and open surgery (Op group). Surgical outcomes were compared between the two groups. Results: We enrolled 160 patients (85 in the Lap group and 75 in the Op group). Hilar bile ductoplasty was performed in 52 (61%) patients from the Lap group and 40 (53%) patients from the Op group. The operative time was significantly longer, the amount of blood loss was significantly lower, and the length of hospital stay was significantly shorter in the Lap group than in the Op group. Postoperative early and late complications occurred at a similarly low rate in both groups. When the surgical outcomes were compared between the group who underwent laparoscopic bile ductoplasty and the group that did not, postoperative early and late complications occurred similarly in both groups. Conclusions: Laparoscopic surgery for CBD with aggressive hilar bile ductoplasty and complete excision of the intrapancreatic bile duct is safe and effective, comparable to open surgery. However, it is necessary to verify whether long-term occurrence of hepatolithiasis similar to open definitive surgery can be obtained in the future.

DOI： 10.1007/s00464-022-09132-x

PERSISTENT CHOLESTASIS AFTER KASAI PORTOENTEROSTOMY PREDICTS PORTAL HYPERTENSION IN NATIVE LIVER SURVIVORS OF BILIARY ATRESIA - RESULT FROM A LARGE COHORT MULTICENTRE ANALYSIS

Chung, PHY; Harumatsu, T; Nakagawa, Y; Tsuboi, K; Chan, EKW; Leung, MWY; Yeung, F; Muto, M; Kawano, T; Amano, H; Shirota, C; Nakamra, H; Koga, H; Miyano, G; Ieiri, S; Uchida, H; Yamataka, A; Wong, KKY

HEPATOLOGY 76 巻頁： S1528 - S1529 2022年10月

特集先天性胆道拡張症up-to-date 腹腔鏡下先天性胆道拡張症根治術中に膵管損傷した2例

加藤大幾, 檜顕成, 城田千代栄, 住田亙, 牧田智, 天野日出, 岡本眞宗, 尾形誠弥, 滝本愛太朗, 高田瞬也, 中川洋一, 合田陽祐, 内田広夫

小児外科 54 巻 ( 9 ) 頁： 924 - 927 2022年9月

特集先天性胆道拡張症up-to-date 肝側合併症(肝内胆管狭窄)に対する肝内胆管形成術

中川洋一, 内田広夫, 檜顕成, 城田千代栄, 住田亙, 牧田智, 岡本眞宗, 尾形誠弥, 滝本愛太朗, 高田瞬也, 加藤大幾, 合田陽祐

小児外科 54 巻 ( 9 ) 頁： 904 - 907 2022年9月

Evaluation of minimally invasive surgical skills training: comparing a neonatal esophageal atresia/tracheoesophageal fistula model with a dry box 査読有り

Deie, K; Nakagawa, Y; Uchida, H; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Fujiogi, M; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Maeda, T

SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES 36 巻 ( 8 ) 頁： 6035 - 6048 2022年8月

記述言語：英語出版者・発行元：Surgical Endoscopy

Background: Pediatric surgeons require highly advanced minimally invasive surgical skills to perform rare and complex surgeries in a very vulnerable population. We developed a neonatal esophageal atresia (EA) model to improve thoracoscopic surgical skills. This study aimed to evaluate the concurrent validity of the model by undertaking pre- and post-training skills assessments in two groups of students with no prior experience performing minimally invasive surgery, using the EA model and a dry box (DB). Methods: A pilot study was performed. The participants were randomly divided into two groups: one trained using the DB and one trained using the EA model. Both groups practiced a minimally invasive surgical suture task. The task completion time, 29-point checklist score, modified suturing error sheet score, and three-dimensional forceps movement in both groups were compared pre-and post-training by video analysis. Results: The EA model task was significantly more difficult than that of the DB. Both groups showed significant improvement in the task time, 29-point checklist score, and modified suturing error sheet score; however, the EA model training was more efficient in improving each error item. Regarding forceps movement, the EA model training significantly decreased wasted motion, whereas the DB was limited in this regard. Conclusions: Short-term training on the EA model, which was more technically demanding than the DB, decreased technical error and wasted motion, and allowed learners to acquire surgical skills more efficiently than training with the DB model. These facts revealed the concurrent validity of the EA model.

DOI： 10.1007/s00464-022-09185-y

Risk factors for unplanned removal of central venous catheters in hospitalized children with hematological and oncological disorders

Miyagishima, M; Hamada, M; Hirayama, Y; Muramatsu, H; Tainaka, T; Shirota, C; Hinoki, A; Imaizumi, T; Nakatochi, M; Kamei, M; Nishikawa, E; Kawashima, N; Narita, A; Nishio, N; Kojima, S; Takahashi, Y

INTERNATIONAL JOURNAL OF HEMATOLOGY 116 巻 ( 2 ) 頁： 288 - 294 2022年8月

記述言語：英語出版者・発行元：International Journal of Hematology

Central venous catheters (CVCs) are essential devices in the treatment of pediatric patients with hematological and oncological disorders; however, the most suitable type of CVC for these patients remains unclear. We retrospectively compared risk factors for unplanned removal of two commonly used CVCs, peripherally inserted central catheters (PICCs) and tunneled CVCs, to propose which is the better device. We followed 89 patients fitted with a tunneled CVC (total 21,395 catheter-days) and 84 fitted with a PICC (total 9177 catheter-days) between January 1, 2013 and December 31, 2015, until catheter removal. Patients with a PICC had a significantly higher 3-month cumulative incidence of catheter occlusion (5.2% vs. 0%, p = 4.08 × 10<sup>−3</sup>) and total unplanned removals (29.0% vs. 6.9%, p = 0.0316) than those with tunneled CVCs. However, the cumulative incidence of central line-associated bloodstream infection did not differ significantly by CVC type. Multivariable analysis identified younger age (< 2 years) [sub-distribution hazard ratio (SHR) 2.29; 95% confidence interval (CI) 1.27–4.14] and PICC (SHR 2.73; 95% CI 1.48–5.02) as independent risk factors for unplanned removal. Thus, our results suggest that tunneled CVCs are preferable in pediatric patients with hematological and oncological disorders requiring long-term, intensive treatment.

DOI： 10.1007/s12185-022-03346-4

Thoracoscopic posterior tracheopexy during primary esophageal atresia repair ameliorate tracheomalacia in neonates: a single-center retrospective comparative cohort study Open Access

Yasui, A; Hinoki, A; Amano, H; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Nakagawa, Y; Uchida, H

BMC SURGERY 22 巻 ( 1 ) 頁： 285 2022年7月

記述言語：英語出版者・発行元：BMC Surgery

Background: Esophageal atresia (EA) is often associated with tracheomalacia (TM). The severity of TM symptoms varies widely, with serious cases requiring prolonged respiratory support and surgical treatment. Although we performed thoracoscopic posterior tracheopexy (TPT) during primary EA repair to prevent or reduce the symptoms of TM, few studies have investigated the safety and effectiveness of TPT during primary EA repair. Therefore, this study aimed to evaluate the safety and efficacy of TPT in neonates. Methods: We retrospectively reviewed the records of all patients diagnosed with TM who underwent primary thoracoscopic EA repair between 2013 and 2020 at the Nagoya University Hospital. Patients were divided into two groups: TPT (TPT group) and without TPT (control group). TPT has been performed in all patients with EA complicated by TM since 2020. We compared patient backgrounds, surgical outcomes, postoperative complications, and treatment efficacy. Results: Of the 22 patients reviewed, eight were in the TPT group and 14 were in the control group. There were no statistically significant differences in the surgical outcomes between the groups (operation time: p = 0.31; blood loss: p = 0.83; time to extubation: p = 0.30; time to start enteral feeding: p = 0.19; time to start oral feeding: p = 0.43). Conversion to open thoracotomy was not performed in any case. The median operative time required for posterior tracheopexy was 10 (8–15) min. There were no statistically significant differences in postoperative complications between the groups (chylothorax: p = 0.36; leakage: p = 1.00; stricture: p = 0.53). The respiratory dependence rate 30 days postoperative (2 [25%] vs. 11 [79%], p = 0.03) and the ratio of the lateral and anterior–posterior diameter of the trachea (LAR) were significantly lower in the TPT group (1.83 [1.66–2.78] vs. 3.59 [1.80–7.70], p = 0.01). Conclusions: TPT during primary EA repair for treatment of TM significantly lowered respiratory dependence rate at 30 days postoperative without increasing the risk of postoperative complications. This study suggested that TPT could improve TM associated with EA.

DOI： 10.1186/s12893-022-01738-1

A patient with very early onset FH-deficient renal cell carcinoma diagnosed at age seven

Taniguchi, R; Muramatsu, H; Okuno, Y; Yoshida, T; Wakamatsu, M; Hamada, M; Shirota, C; Sumida, W; Hinoki, A; Tainaka, T; Gotoh, Y; Tsuzuki, T; Tanaka, Y; Kojima, S; Uchida, H; Takahashi, Y

FAMILIAL CANCER 21 巻 ( 3 ) 頁： 337 - 341 2022年7月

記述言語：英語出版者・発行元：Familial Cancer

Hereditary leiomyomatosis and renal cell cancer (HLRCC) is caused by heterozygous germline variants in the fumarate hydratase (FH) gene and is associated with increased susceptibility to cutaneous leiomyomas, uterine leiomyomas, and renal cell carcinoma (RCC). HLRCC-associated RCC usually occurs in the middle age, with the median age being 40–44 years. This report describes a seven-year-old (84-month-old) male who developed a large right kidney tumor with multiple cystic lesions that contained enhanced solid components. There was no evidence of distant metastasis. The male patient underwent right nephrectomy and has been recovering well without metastasis or recurrence. Pathological examination revealed that tumor cells with relatively prominent nucleoli and surrounded by halos, were located in a limited area. Immunohistochemical staining was negative for FH. Whole-exome sequencing identified his germline variant in the FH gene and its loss of heterozygosity in the tumor. At nine years (114 months) of age, the male patient showed no recurrence of the tumor. This was the youngest-onset case of HLRCC-associated RCC to date. This report may affect the starting age for future RCC-surveillance programs for patients with HLRCC.

DOI： 10.1007/s10689-021-00268-8

Laparoscopic definitive surgery for choledochal cyst is performed safely and effectively in infants Open Access

Tainaka, T; Shirota, C; Sumida, W; Yokota, K; Makita, S; Amano, H; Okamoto, M; Takimoto, A; Kano, Y; Yasui, A; Nakagawa, Y; Hinoki, A; Uchida, H

JOURNAL OF MINIMAL ACCESS SURGERY 18 巻 ( 3 ) 頁： 372 - 377 2022年7月

記述言語：英語出版者・発行元：Journal of Minimal Access Surgery

Background: Laparoscopic definitive surgery for choledochal cyst (CC) in infants requires advanced skills because of their small size. If patients with a prenatal diagnosis of CC have any biliary symptoms, they need semi-emergency definitive surgery. This study aimed to estimate whether laparoscopic definitive surgery for CC can be performed safely and effectively in infants, especially when emergency surgery is required. Patients and Methods: From January 2006 to December 2019, 21 patients under 1 year of age underwent laparoscopically or open definitive surgery, and 16 patients aged 3-5 years underwent laparoscopic surgery for CC at our institution. In cases of prenatal diagnosis, elective surgery (EL) was performed at about 6 months of age for patients with no biliary symptoms; the semi-emergency surgery (EM) was performed when patients had any biliary symptoms. Surgical outcomes were retrospectively compared between the Lap <1 y and Op <1 y groups and between the Lap <1 y and Lap 3-5 y groups. In addition, the surgical outcomes of those who underwent EM were also evaluated. Results: Operative time was significantly longer, and blood loss was significantly lower in the Lap <1 y group than in the Op <1 y group. All surgical outcomes were similar between the Lap <1 y and Lap 3-5 y groups and between the EM and EL groups. Conclusion: Laparoscopic definitive surgery for CC in infants under 1 year of age is safe and feasible. Even semi-emergency laparoscopic surgery can be performed safely and effectively in small infants.

DOI： 10.4103/jmas.JMAS_98_21

Patients with gastric volvulus recurrence have high incidence of wandering spleen requiring laparoscopic gastropexy and splenopexy Open Access

Nakagawa, Y; Uchida, H; Amano, H; Hinoki, A; Tainaka, T; Shirota, C; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Kato, D

PEDIATRIC SURGERY INTERNATIONAL 38 巻 ( 6 ) 頁： 875 - 881 2022年6月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Though gastric volvulus in neonates and infants resolves by conservative therapy and aging, some cases require surgical intervention. This study aimed to review the cases of gastric volvulus requiring surgical intervention and evaluate their characteristics. Methods: We retrospectively reviewed gastric volvulus cases requiring surgical intervention. Surgical indication was persistent acute gastric volvulus and repeated hospitalization for gastric volvulus. We evaluated the characteristics of those cases requiring surgical intervention and the surgical results of laparoscopic gastropexy. Results: The median age of patients included was 4 years (range: 1–6 years). All eight cases of gastric volvulus requiring sugery had congenital spleen diseases. Six of the eight cases suffered from a wandering spleen, while two cases presented with situs inversus with asplenia. Both splenopexy (preperitoneal distension balloon [PDB] or blunt separaion methods) and gastropexy were performed in cases with wandering spleen. No postoperative complications were reported in any of the eight cases, except the recurrence of gastric volvulus due to suture shedding in one case. Conclusion: Laparoscopic gastropexy for gastric volvulus and splenopexy for cases concomitant with wandering spleen were found to be effective surgical approaches. Both PDB and blunt separation methods for making extraperitoneal pockets for the spleen were employed successfully.

DOI： 10.1007/s00383-022-05125-y

METABOLOMICS OF URINARY METABOLITES IN CHILDHOOD RHABDOMYOSARCOMA TO DISCOVER NOVEL BIOMARKERS

Nakano, S; Uchida, H; Amano, H; Narita, A; Abe, M; Ishigaki, T; Sakairi, M; Shirota, C; Sumida, W; Makita, S; Takimoto, A; Okamoto, M; Yasui, A; Takada, S; Nakagawa, Y; Terui, Y; Sunagawa, M; Takahashi, Y; Osawa, T; Hinoki, A

PEDIATRIC BLOOD & CANCER 69 巻 2022年6月

Utility of endoscopic retrograde cholangiopancreatography in management of pediatric pancreaticobiliary disease Open Access

Makita, S; Amano, H; Kawashima, H; Hinoki, A; Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Okamoto, M; Takimoto, A; Yasui, A; Nakagawa, Y; Uchida, H

BMC PEDIATRICS 22 巻 ( 1 ) 頁： 134 2022年3月

記述言語：英語出版者・発行元：BMC Pediatrics

Background: The purpose of this study was to evaluate the utility of endoscopic retrograde cholangiopancreatography (ERCP) in pediatric patients with pancreaticobiliary diseases. Methods: A retrospective review was performed on patients who underwent ERCP for the treatment of biliary tract disease and detailed examination of pancreatitis at our institution from January 1999 to December 2020. Results: ERCP was performed for congenital biliary dilatation (CBD) (n = 42), choledocholithiasis (n = 9), common bile duct stenosis (n = 1), and several types of pancreatitis (n = 13). The only severe complication of ERCP was common bile duct injury. Three (5.8%) of 52 biliary diseases failed to be treated by ERCP. All patients with pancreatic disease were correctly diagnosed and treated. Conclusions: Endoscopic biliary drainage with a temporary stent was adequate for symptomatic relief in CBD. Stenting of the pancreatic duct was useful for improving the angulation and drainage of the pancreatic duct. ERCP was useful for understanding the anatomy of the pancreatic duct and revealing potential treatments. Therefore, ERCP and transendoscopic therapy are sufficiently feasible in pediatric patients and should be actively introduced for the investigation and treatment of pancreaticobiliary diseases.

DOI： 10.1186/s12887-022-03207-3

特集プライマリケアにおける単純X線検査-ここまで読影することができる胸部:各論肺葉の異常　囊胞性肺疾患

内田広夫, 城田千代栄, 田井中貴久, 住田亙

小児内科 54 巻 ( 3 ) 頁： 423 - 431 2022年3月

Safety and feasibility of primary radical surgery for meconium peritonitis considering patients' general condition and perioperative findings Open Access

Nakagawa, Y; Uchida, H; Amano, H; Hinoki, A; Shirota, C; Sumida, W; Yokota, K; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Takada, S; Maeda, T

NAGOYA JOURNAL OF MEDICAL SCIENCE 84 巻 ( 1 ) 頁： 148 - 154 2022年2月

記述言語：英語出版者・発行元：Nagoya Journal of Medical Science

We reviewed the outcomes of meconium peritonitis and evaluated the safety and feasibility of primary radical surgery for meconium peritonitis. A total of 21 cases of meconium peritonitis between 2006 and 2020 were retrospectively reviewed. The patients were classified into two groups based on the type of surgery: group I (primary radical surgery, n = 16) and group II (multistage surgery; drainage only or ileostomy, followed by elective surgery, n = 5). Patient backgrounds and surgical outcomes were compared between the two groups. The term of prenatal diagnosis, preoperative white blood cell count, and preoperative catecholamine use were not significantly different between the two groups. Group I included more mature neonates than group II (gestational age at birth, 35w1d vs 30w1d, p = 0.02; birth weight, 2.5 kg vs 1.1 kg, p < 0.01). Preoperative C-reactive protein was significantly lower in group I (0.37 mg/dL vs 2.8 mg/dL, p < 0.05). Operation time, blood loss, time to enteral feeding, and complication rates were not significantly different between the two groups. The surgical outcomes of primary radical surgery were comparable to those of multistage surgery, although the patients’ backgrounds were different. Our strategy of selecting one-stage or multiple-stage surgery for treatment of meconium peritonitis, depending on the patient’s general condition and degree of intestinal ischemia, was reasonable.

DOI： 10.18999/nagjms.84.1.148

Laparoscopic Kasai portoenterostomy can be a standard surgical procedure for treatment of biliary atresia 査読有り Open Access

Shirota, C; Hinoki, A; Tainaka, T; Sumida, W; Kinoshita, F; Yokota, K; Makita, S; Amano, H; Nakagawa, Y; Uchida, H

WORLD JOURNAL OF GASTROINTESTINAL SURGERY 14 巻 ( 1 ) 頁： 56 - 63 2022年1月

多発肝内胆管狭窄を伴う先天性胆道拡張症術後難治性肝内結石の１例 Open Access

牧田智, 内田広夫, 檜顕成, 城田千代栄, 住田亙, 天野日出, 岡本眞宗, 尾形誠弥, 滝本愛太朗, 高田瞬也, 中川洋一, 加藤大幾, 合田陽祐

日本膵・胆管合流異常研究会プロシーディングス 45 巻 ( 0 ) 頁： 74 - 75 2022年

胆道拡張症術後肝内結石への DBERC 中に小腸穿孔をきたし、腹腔鏡下穿孔部閉鎖＋内視鏡下採石した1例 Open Access

中川洋一, 内田広夫, 檜顕成, 城田千代栄, 住田亙, 牧田智, 岡本眞宗, 尾形誠弥, 滝本愛太朗, 高田瞬也, 加藤大幾, 合田陽祐

日本膵・胆管合流異常研究会プロシーディングス 45 巻 ( 0 ) 頁： 77 - 78 2022年

特集小児外科疾患の家族内発生胆道閉鎖症の家族内発症

安井昭洋, 内田広夫, 城田千代栄, 住田亙, 横田一樹, 牧田智, 岡本眞宗, 滝本愛太朗, 高田瞬也, 中川洋一

小児外科 53 巻 ( 12 ) 頁： 1288 - 1290 2021年12月

Clinical characteristics and outcomes of the right congenital diaphragmatic hernia compared to the left: a 10-year single-center experience Open Access

Okamoto, M; Amano, H; Uchida, H; Hinoki, A; Tainaka, T; Shirota, C; Sumida, W; Yokota, K; Makita, S; Takimoto, A; Yasui, A; Nakagawa, Y

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 12 ) 頁： 1675 - 1681 2021年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: The features of right-sided congenital diaphragmatic hernias (RCDHs) are quite different from those of left-sided CDHs (LCDHs). We have summarized the features of RCDHs experienced in our institution. Methods: This retrospective study analyzed the cases of patients with CDH registered at our institution between 2011 and 2020. Defects on each side were compared based on prenatal diagnosis, medical treatment, type of surgery, and outcomes. Results: A total of 101 patients underwent surgery at our institution during the neonatal period, and 11 had RCDHs. RCDHs and LCDHs were significantly different in terms of extracorporeal membrane oxygenation (36% vs. 6%, p = 0.002), patch repair (81% vs. 28%, p < 0.001), recurrence rate (36% vs. 11%, p = 0.022), and length of hospital stay (117 days vs. 51 days, p = 0.012). The severity of the fetal diagnosis did not reflect postnatal severity. All patients with RCDH survived to discharge, and there was no significant difference in survival rate between the right and left sides. Conclusion: Neonates with RCDH required more intensive treatments; however, the survival rate was comparable between RCDH and LCDH. RCDH was significantly different from LCDH and an optimal treatment strategy for RCDHs should be established.

DOI： 10.1007/s00383-021-04999-8

An imaging study on tracheomalacia in infants with esophageal atresia: the degree of tracheal compression by the brachiocephalic artery is a good indicator for therapeutic intervention Open Access

Sumida, W; Tainaka, T; Shirota, C; Yokota, K; Makita, S; Takimoto, A; Yasui, A; Okamoto, M; Nakagawa, Y; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 12 ) 頁： 1719 - 1724 2021年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Tracheomalacia (TM) is a frequent complication after esophageal atresia (EA) repair. This study aimed to review patients who underwent aortopexy for TM after EA repair and to compare their imaging features. Methods: The patients who underwent thoracoscopic EA repair and contrast-enhanced computed tomography (CECT) at our hospital between 2013 and 2020 were retrospectively reviewed. The ratio of the lateral and anterior–posterior diameter of the trachea (LAR) where the brachiocephalic artery (BCA) crosses the trachea was defined. The LAR of the patients who underwent CECT for asymptomatic pulmonary disease was set as a normal reference. The Z-score of each LAR was calculated and compared between the patients that did or did not undergo aortopexy. Results: A total of 51 patients represented the controls, 5 patients underwent aortopexy, and 12 patients were discharged without surgery. The mean LARs in the patients who underwent aortopexy, did not undergo aortopexy, and controls were 3.54, 1.54, and 1.15, respectively. The mean Z-score of the aortopexy group was 21.2. After successful aortopexy, each patient’s LAR decreased to < 1.5. Conclusion: Aortopexy was preferred if the trachea was compressed by the BCA. The LAR is a useful indicator for predicting the therapeutic effect of aortopexy.

DOI： 10.1007/s00383-021-04985-0

Urinary N<SUP>1</SUP>,N<SUP>12</SUP>-diacetylspermine as a biomarker for pediatric cancer: a case-control study Open Access

Yokota, K; Hinoki, A; Hiramatsu, K; Amano, H; Kawamura, M; Kuwatsuka, Y; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Okamoto, M; Takimoto, A; Yasui, A; Nakagawa, Y; Uchida, H; Kawakita, M

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 12 ) 頁： 1659 - 1665 2021年12月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Minimally invasive examinations are particularly important in pediatric patients. Although the significance of urinary N<sup>1</sup>,N<sup>12</sup>-diacetylspermine (DiAcSpm) as a tumor marker (TM) has been reported in many types of adult cancers, its usefulness in pediatric cancers has not been reported. This may be due to urinary DiAcSpm level variations with age. This study aims to measure the normal levels of urinary DiAcSpm in healthy individuals and investigate its usefulness as a TM in childhood cancer. Methods: Urinary samples were collected from pediatric patients with and without cancer. The urinary DiAcSpm levels were measured, and the values were compared. Results: A total of 32 patients with cancer and 405 controls were enrolled in the study. Of the 32 patients, 13 had neuroblastoma, 9 had malignant lymphoma (ML), and 10 had leukemia. In the control group, the urinary DiAcSpm values markedly fluctuated among those with young age, especially infants; meanwhile, the values converged among those aged roughly 10 years and above. The sensitivity of DiAcSpm was significantly different among the three types of cancers: neuroblastoma (30.8%), ML (77.8%), and leukemia (40%). Conclusion: The urinary DiAcSpm value is a useful TM for both screening and follow-up of ML.

DOI： 10.1007/s00383-021-04987-y

Long-term outcomes of the partial splenectomy for hypersplenism after portoenterostomy of patients with biliary atresia Open Access

Tainaka, T; Hinoki, A; Tanaka, Y; Shirota, C; Sumida, W; Yokota, K; Makita, S; Oshima, K; Amano, H; Takimoto, A; Kano, Y; Uchida, H

NAGOYA JOURNAL OF MEDICAL SCIENCE 83 巻 ( 4 ) 頁： 765 - 771 2021年11月

記述言語：英語出版者・発行元：Nagoya Journal of Medical Science

Massive splenomegaly and hypersplenism in patients with biliary atresia after Kasai portoenterostomy were treated with partial splenic embolization or total splenectomy. We performed partial splenectomy to reduce the complications of partial splenic embolization and avoid overwhelming post-splenectomy infection. This study aimed to evaluate the long-term effects of partial splenectomy for hypersplenism on postoperative liver and spleen function in patients with biliary atresia. Among jaundice-free patients with biliary atresia who underwent Kasai portoenterostomy between January 1992 and December 2012, 15 underwent partial splenectomy for massive splenomegaly and hypersplenism at our institution. Changes in the laboratory data 10 years post partial splenectomy were retrospectively investigated, and these along with the latest data were measured. A total of four patients (27%) required living-donor liver transplantation after partial splenectomy, a proportion similar to those who did not undergo partial splenectomy. Compared to the preoperative baseline, the platelet counts were significantly higher at 1 and 3 years after surgery (p < 0.05). Aspartic aminotransferase-to-platelet ratio index was significantly lower at 1, 7, and 10 years after partial splenectomy (p < 0.05). No further surgeries were required for hypersplenism after partial splenectomy over 10 years, and there were no cases of overwhelming post-splenectomy infection after partial splenectomy. Partial splenectomy is safe and effective for the treatment of hypersplenism with biliary atresia over a long time period. It could be considered as an alternative to partial splenic embolization as it can suppress hypersplenism for a long time and induces fewer postoperative complications.

DOI： 10.18999/nagjms.83.4.765

Factors associated with bleeding after endoscopic variceal ligation in children Open Access

Yokoyama, S; Ishizu, Y; Ishigami, M; Honda, T; Kuzuya, T; Ito, T; Hinoki, A; Sumida, W; Shirota, C; Tainaka, T; Makita, S; Yokota, K; Uchida, H; Fujishiro, M

PEDIATRICS INTERNATIONAL 63 巻 ( 10 ) 頁： 1223 - 1229 2021年10月

記述言語：英語出版者・発行元：Pediatrics International

Background: Endoscopic variceal ligation (EVL) is a widely accepted treatment for esophagogastric varices in patients with portal hypertension (PHT). It is used for urgent treatment and prophylactic treatment of esophagogastric varices in pediatric as well as adult patients. However, major life-threatening adverse events such as early rebleeding can occur. Although early rebleeding after EVL among children and adolescents has been reported, the risk factors remain obscure. This study evaluated the risk factors for early rebleeding after EVL in children and adolescents. Methods: The subjects were children and adolescents (<18 years) with PHT who underwent EVL for esophagogastric varices. Early rebleeding was defined as hematemesis, active bleeding, or blood retention in the stomach, confirmed by esophagogastroduodenoscopy from 2 h to 5 days after EVL. Results: A total of 50 EVL sessions on 22 patients were eligible for this study. There were four episodes of early rebleeding. No other major adverse event has occurred. Multivariate analysis showed that EVL implemented at cardiac varices just below the esophagogastric junction (EGJ), within 5 mm from the EGJ, is the independent factor for a higher risk of early rebleeding: odds ratio 18.2 (95% confidence interval: 1.40–237.0), P = 0.02. Conclusions: Children and adolescents who undergo EVL for cardiac varices just below the EGJ have a higher risk of early rebleeding than those who do not.

DOI： 10.1111/ped.14614

胆管穿孔をきたした先天性胆道拡張症に対して，腹腔鏡下に一期的根治術を施行した1例 Open Access

石井宏樹, 牧田智, 安井昭洋, 滝本愛太朗, 横田一樹, 住田亙, 田井中貴久, 城田千代栄, 内田広夫

日本小児外科学会雑誌 57 巻 ( 5 ) 頁： 855 - 859 2021年8月

記述言語：日本語出版者・発行元：特定非営利活動法人日本小児外科学会

<p>症例は1歳9か月女児，嘔吐と発熱を主訴に前医受診，先天性胆道拡張症の診断で入院となった．入院6日目に胆道穿孔が明らかになり当科に転院し，緊急手術を行った．手術では総胆管と胆囊管合流部に約2 cm大の穿孔部を認めた．胆道ドレナージや穿孔部の修復は極めて困難であり，腹腔鏡下に一期的根治術を施行した．また，肝門部の左右胆管に強い膜様狭窄を認め胆管形成も施行した．合併症なく経過し，術後10日目に軽快退院となった．胆道穿孔をきたした先天性胆道拡張症に対する治療は二期的手術が推奨されている．一方，近年は一期的根治術が有用であるという報告が散見されるが，ほとんどは開腹手術である．今回，我々は腹腔鏡下に一期的根治術を施行した1例を経験した．胆道穿孔症例でも，腹腔鏡下胆道拡張症手術に習熟した施設において，全身状態が良好な症例であれば腹腔鏡下での一期的手術は有用であると考える．</p>

DOI： 10.11164/jjsps.57.5_855

Development of a novel diagnostic system for bile duct cancer using urinary metabolites.

Amano, H; Hinoki, A; Uchida, H; Yokota, K; Ishigaki, T; Sakairi, M; Abe, M; Terui, Y; Oda, H; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Takimoto, A; Okamoto, M; Yasui, A; Nakagawa, Y

CANCER RESEARCH 81 巻 ( 13 ) 2021年7月

Postoperative intestinal obstruction in patients with biliary atresia impedes biliary excretion and results in subsequent liver transplantation (vol 37, pg 229, 2021) Open Access

Takimoto, A; Sumida, W; Amano, H; Shirota, C; Tainaka, T; Yokota, K; Makita, S; Yasui, A; Kanou, Y; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 6 ) 頁： 835 - 835 2021年6月

特集シミュレーションとナビゲーション精索静脈瘤

田井中貴久, 田中裕次郎, 檜顕成, 城田千代栄, 住田亙, 横田一樹, 牧田智, 内田広夫

小児外科 53 巻 ( 5 ) 頁： 560 - 563 2021年5月

Urinary biomarkers for monitoring treatment response in neuroblastoma patients.

Amano, H; Hinoki, A; Uchida, H; Yokota, K; Ishigaki, T; Sakairi, M; Abe, M; Takahashi, Y; Narita, A; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Takimoto, A; Kano, Y; Yasui, A; Okamoto, M; Nakagawa, Y

JOURNAL OF CLINICAL ONCOLOGY 39 巻 ( 15 ) 2021年5月

腹壁破裂を合併した結腸閉鎖症に対して，器械吻合による一期的結腸吻合後sutureless腹壁閉鎖を施行した1例 Open Access

千馬耕亮, 田中裕次郎, 城田千代栄, 田井中貴久, 住田亙, 横田一樹, 大島一夫, 牧田智, 内田広夫

日本小児外科学会雑誌 57 巻 ( 1 ) 頁： 22 - 26 2021年2月

記述言語：日本語出版者・発行元：特定非営利活動法人日本小児外科学会

<p>症例は36週4日，2,370 gで出生した腹壁破裂の女児．出生後，脱出した腸管を確認すると結腸閉鎖を合併していた．その口側盲端にはpinholeがあいていたが腹腔内の汚染はなく，一旦サイロ造設し翌日結腸閉鎖に対する手術を施行した．腸管を洗浄しながら癒着剥離を行い結腸閉鎖部の口側・肛門側を確認し，血流の十分ある部分で自動縫合器による機能的端々吻合を行った．腸管は浮腫が強く腹腔内に還納できなかったため，再度サイロを造設して手術を終了した．その後1週間かけて腸管を腹腔内に還納し，第9生日にsutureless法で腹壁閉鎖を行った．術後経過は良好で，第19生日にfull feedingとなり，第32生日に退院した．結腸閉鎖合併腹壁破裂症例では人工肛門造設が一般的であるが，自動縫合器を用いることで口径差を気にせず吻合を行うことができるため，有効な方法と考えられた．</p>

DOI： 10.11164/jjsps.57.1_22

Postoperative intestinal obstruction in patients with biliary atresia impedes biliary excretion and results in subsequent liver transplantation Open Access

Takimoto, A; Sumida, W; Amano, H; Shirota, C; Tainaka, T; Yokota, K; Makita, S; Yasui, A; Kanou, Y; Hinoki, A; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 2 ) 頁： 229 - 234 2021年2月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: This study aimed to investigate the negative effects of intestinal obstruction for jaundice-free native liver survival after Kasai portoenterostomy (PE) for biliary atresia (BA). Methods: We retrospectively reviewed the records of patients who underwent PE for BA between 2006 and 2019. We evaluated the postoperative morbidity of intestinal obstruction for up to 2 years after PE and the effects of intestinal obstruction on jaundice-free native liver survival. On the basis of their initial operation, patients were divided into open portoenterostomy (Open-PE) and laparoscopic portoenterostomy (Lap-PE) groups, and morbidity was compared. Results: Of the 87 patients reviewed, 6 (6.9%) patients developed postoperative intestinal obstruction and underwent surgery to relieve the obstruction. The morbidity of early postoperative intestinal obstruction was 1.68 per 10,000 person days. The jaundice-free native liver survival rate among patients who once achieved jaundice-free status after PE was significantly lower in the patients with intestinal obstruction compared to in those without intestinal obstruction (0% vs. 73.8%; RR = 3.81, p = 0.007). No significant differences were seen in postoperative intestinal obstructions between the Open-PE and Lap-PE groups (p = 0.242). Conclusions: Intestinal obstruction negatively impact jaundice-free native liver survival, even in patients who once achieved jaundice-free status after PE for BA.

DOI： 10.1007/s00383-020-04807-9

Thoracoscopic surgery for congenital lung cysts: an attempt to limit pulmonary resection in cases of lesions involving multiple lobes 査読有り Open Access

Shirota, C; Tainaka, T; Sumida, W; Yokota, K; Makita, S; Takimoto, A; Amano, H; Hinoki, A; Ono, Y; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 2 ) 頁： 213 - 221 2021年2月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Although we generally perform thoracoscopic lobectomy for congenital lung cysts (CLCs), we recently began performing thoracoscopic-limited pulmonary resection (segmentectomy or small partial lung resection) on relatively small lesions and on lesions involving multiple lobes. Our study aimed to determine the therapeutic outcomes of thoracoscopic CLC surgery. Methods: We retrospectively reviewed patients aged ≤ 18 years who underwent their first CLC surgery at our facility between 2013 and 2020. Results: A comparison between patients < 4 months old and those ≥ 4 months old showed no significant difference in operating time or incidence of complications. Blood loss volume (mL/kg) was significantly greater in patients < 4 months old and in patients who had undergone semi-urgent or urgent surgery. Operating time and postoperative complications were not increased in semi-urgent or urgent surgeries. There was no significant difference in operating time, blood loss volume, or postoperative complications between patients with a preoperative history of pneumonia and patients with no such history. Conclusion: In most patients, thoracoscopic surgery for CLC was safely performed. Limited pulmonary resection is considered difficult to perform thoracoscopically in children, but can be safely performed using new devices and navigation methods. Level of evidence: III.

DOI： 10.1007/s00383-020-04793-y

Risk factors and outcomes of bile leak after laparoscopic surgery for congenital biliary dilatation Open Access

Tanaka, Y; Tainaka, T; Hinoki, A; Shirota, C; Sumida, W; Yokota, K; Oshima, K; Makita, S; Amano, H; Takimoto, A; Kano, Y; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 37 巻 ( 2 ) 頁： 235 - 240 2021年2月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: One of the main causes of stricture at hepaticojejunostomy site after surgery for congenital biliary dilatation is inflammation or infection associated with bile leak. The aim of this study was to determine the risk factors and outcomes of bile leak after laparoscopic surgery. Methods: We retrospectively reviewed the demographics and outcomes of patients who underwent laparoscopic surgery for congenital biliary dilatation between September 2013 and December 2019. Data from patients with bile leak were compared to data from patients without bile leak. Results: Fourteen of 78 patients had bile leak. Hepatic duct diameter at anastomosis was the only risk factor of bile leak. Patients with the diameter ≤ 10 mm had higher incidence of bile leak than in patients with the diameter > 10 mm (P = 0.0023). Among them, bile leak occurred more frequently in patients operated on by non-qualified surgeons based on the Japan Society for Endoscopic Surgery endoscopic surgical skill qualification system than by qualified surgeons (P = 0.027). However, none of the patients with bile leak developed anastomotic stricture afterwards. Conclusion: Although good technical skill is necessary to avoid bile leak in narrow hepatic duct cases (≤ 10 mm), slight bile leak may not result in anastomotic stricture.

DOI： 10.1007/s00383-020-04791-0

先天性胆道拡張症において術前MRI 画像による胆管狭窄部位の予測と術中胆管形成の検討 Open Access

中川洋一, 内田広夫, 檜顕成, 城田千代栄, 住田亙, 横田一樹, 牧田智, 岡本眞宗, 滝本愛太朗, 安井昭洋, 高田舜也, 前田拓也

日本膵・胆管合流異常研究会プロシーディングス 44 巻 ( 0 ) 頁： 72 - 73 2021年

先天性胆道拡張症の晩期合併症についての検討 Open Access

城田千代栄, 天野日出, 檜顕成, 住田亙, 横田一樹, 牧田智, 岡本眞宗, 滝本愛太朗, 安井昭洋, 高田瞬也, 中川洋一, 前田拓也, 内田広夫

日本膵・胆管合流異常研究会プロシーディングス 44 巻 ( 0 ) 頁： 50 - 51 2021年

特集小児がん手術の問題点-わたしはここを重視している当院での腹腔鏡下腫瘍生検の実際

住田亙, 田井中貴久, 城田千代栄, 横田一樹, 牧田智, 滝本愛太朗, 安井昭洋, 天野日出, 石井宏樹, 檜顕成, 内田広夫

小児外科 52 巻 ( 12 ) 頁： 1331 - 1335 2020年12月

A novel Lugol's iodine staining technique to visualize the upper margin of the surgical anal canal intraoperatively for Hirschsprung disease: a case series Open Access

Yokota, K; Amano, H; Kudo, T; Yamamura, T; Tanaka, Y; Tainaka, T; Shirota, C; Sumida, W; Makita, S; Takimoto, A; Nakamura, M; Fujishiro, M; Hinoki, A; Uchida, H

BMC SURGERY 20 巻 ( 1 ) 頁： 317 2020年12月

記述言語：英語出版者・発行元：BMC Surgery

Background: In cases of Hirschsprung disease, complete and reproducible resection of the aganglionic bowel is ideal to achieve good postoperative bowel function. Reliable identification of the upper margin of the surgical anal canal, which is the squamous-columnar junction, is necessary during transanal pull-through. Here, we describe a novel staining technique using Lugol’s iodine stain to visualize the upper margin of the surgical anal canal. Methods: Lugol’s iodine staining was performed in five patients with Hirschsprung disease treated using a single-stage laparoscopic transanal pull-through modified Swenson procedure. In two of these patients, endocytoscopic observation with ultra-high magnification was performed using methylene blue and crystal violet to mark the border of the squamous epithelium at 1 week before surgery. The alignment between the incisional line, which was revealed using Lugol’s iodine staining and endocytoscopic marking, was evaluated. Complications, including postoperative bowel dysfunction, were evaluated. Results: In all cases, Lugol’s iodine staining produced a well-demarcated line. The endocytoscopic marking of the upper margin of the surgical anal canal was aligned with the line revealed by Lugol’s iodine staining. There were no complications associated with the transanal pull-through procedure, including postoperative bowel dysfunction. Conclusions: Lugol’s iodine staining could be a safe and practical method to visualize the upper margin of the surgical anal canal intraoperatively. This finding may be useful for surgeons to make a consistent removal of the aganglionic bowel during surgery for Hirschsprung disease.

DOI： 10.1186/s12893-020-00986-3

Safe diagnostic management of malignant mediastinal tumors in the presence of respiratory distress: a 10-year experience Open Access

Tanaka, T; Amano, H; Tanaka, Y; Takahashi, Y; Tajiri, T; Tainaka, T; Shirota, C; Sumida, W; Yokota, K; Makita, S; Tani, Y; Hinoki, A; Uchida, H

BMC PEDIATRICS 20 巻 ( 1 ) 頁： 292 2020年6月

記述言語：英語出版者・発行元：BMC Pediatrics

Background: The fundamental treatment for patients with pediatric malignant mediastinal tumors is chemotherapy. Therefore, accurate diagnosis is essential for selecting the appropriate chemotherapeutic regimen. However, malignant mediastinal tumors occasionally cause respiratory distress, and biopsies under general anesthesia are dangerous for such patients as invasive mechanical ventilation can aggravate airway obstruction caused by mass effect. In this study, we reviewed our 10-year diagnostic experience to evaluate the efficacy of our practices and confirm a safe diagnostic protocol for future patients. Methods: We retrospectively reviewed medical records of children with malignant mediastinal tumors diagnosed at Nagoya University Hospital from 2007 to 2018 who demonstrated respiratory distress. Respiratory distress included dyspnea, massive pleural effusion, wheezing, and hypoxemia owing to tumors. Data on sex, age at onset, primary symptoms, location of tumor, management strategy (especially the method of diagnosis and definitive diagnosis), clinical course, prognosis during the acute phase (within 3 months from the onset of respiratory symptoms), and long-term outcome were collected. Results: Twelve pediatric patients met the review criteria. There were seven anterior mediastinal tumors and five posterior mediastinal tumors. All anterior mediastinal tumors were diagnosed via bone marrow smear, thoracentesis, or core needle biopsy while maintaining spontaneous breathing. Regarding posterior tumors, two patients were diagnosed via a core needle biopsy and lymph node excisional biopsy under spontaneous breathing. Two cases were initially diagnosed solely using tumor markers. One patient with severe tracheal compression underwent tumor resection with extracorporeal membrane oxygenation stand-by. No patient died of diagnostic procedure-related complications. Conclusions: In 11 of the 12 cases reviewed, safe and accurate tumor diagnosis was accomplished without general anesthesia. A diagnostic strategy without general anesthesia considering the tumor location proved to be useful.

DOI： 10.1186/s12887-020-02183-w

特集 Hirschsprung病手術の現在腹腔鏡補助下Swenson法

横田一樹, 内田広夫, 田井中貴久, 城田千代栄, 住田亙, 牧田智, 大島一夫, 滝本愛太朗, 狩野陽子

小児外科 52 巻 ( 4 ) 頁： 369 - 373 2020年4月

術中膵管損傷に対して内視鏡的に膵管ステントを挿入した1例 Open Access

城田千代栄, 田井中貴久, 住田亙, 横田一樹, 牧田智, 天野日出, 滝本愛太朗, 安井昭洋, 石井宏樹, 檜顕成, 内田広夫

日本膵・胆管合流異常研究会プロシーディングス 43 巻 ( 0 ) 頁： 84 - 85 2020年

小児腹腔鏡手術における肝内胆管形成術 Open Access

田井中貴久, 城田千代栄, 住田亙, 横田一樹, 牧田智, 滝本愛太朗, 安井昭洋, 石井宏樹, 檜顕成, 内田広夫

日本膵・胆管合流異常研究会プロシーディングス 43 巻 ( 0 ) 頁： 36 - 36 2020年

Identification and Validation of Novel Non-invasive Biomarkers in Patient Urine Samples for Diagnosis of New and Recurrent Neuroblastoma

Yokota, K; Uchida, H; Hinoki, A; Sakairi, M; Abe, M; Tanaka, Y; Tainaka, T; Shirota, C; Sumida, W; Oshima, K; Makita, S; Takimoto, A; Kano, Y; Inada, K

PEDIATRIC BLOOD & CANCER 66 巻頁： S106 - S106 2019年12月

特集ピーンチ!私はこうして切り抜けた胆道閉鎖症　腹腔鏡手術中に門脈から出血

内田広夫, 田中裕次郎, 田井中貴久, 城田千代栄, 住田亙, 牧田智, 横田一樹, 滝本愛太郎, 大島一夫, 狩野陽子, 稲田亘佑

小児外科 51 巻 ( 10 ) 頁： 1020 - 1023 2019年10月

Efficacy of and prognosis after steroid pulse therapy in patients with poor reduction of jaundice after laparoscopic Kasai portoenterostomy

Tanaka, Y; Shirota, C; Tainaka, T; Sumida, W; Oshima, K; Makita, S; Tanaka, T; Tani, Y; Chiba, K; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 35 巻 ( 10 ) 頁： 1059 - 1063 2019年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: High-dose postoperative steroid therapy after Kasai portoenterostomy is reported to improve jaundice clearance and a strong anti-inflammatory activity might prevent fibrous tissue formation which is often observed at the porta hepatis in revision surgery. We started steroid pulse therapy for the patients with cessation of decrease in jaundice and aimed to evaluate the efficacy in this study. Methods: The demographics and outcomes of patients who underwent laparoscopic Kasai portoenterostomy and received steroid pulse therapy within 2 months postoperatively between September 2014 and December 2018 were retrospectively reviewed; the therapy was determined successful when the serum total bilirubin level decreased to or below two-thirds of the pre-therapy level after 2 weeks. Patient data in the successful group were compared with those in the unsuccessful group. Results: Steroid pulse therapy was successful in seven of 16 patients (43.8%). The percentage of patients whose serum total bilirubin level decreased to normal was significantly higher in the successful group at 3 months (85.7% vs. 11.1%, P = 0.0028) and after all (100% vs. 33.3%, P = 0.011). Conclusions: Steroid pulse therapy was effective for some patients. Unsuccessful cases may have little chances of jaundice clearance; revision Kasai portoenterostomy would be a good option.

DOI： 10.1007/s00383-019-04537-7

NON-INVASIVE SCREENING FOR DETECTING ESOPHAGOGASTRIC VARICES IN CHILDREN WITH BILIARY ATRESIA

Yokoyama, S; Ishigami, M; Honda, T; Kuzuya, T; Ishizu, Y; Ito, T; Shirota, C; Uchida, H; Fujishiro, M

HEPATOLOGY 70 巻頁： 200A - 200A 2019年10月

Spleen stiffness by 2-D shear wave elastography is the most accurate predictor of high-risk esophagogastric varices in children with biliary atresia

Yokoyama, S; Ishigami, M; Honda, T; Kuzuya, T; Ishizu, Y; Ito, T; Hirooka, Y; Tanaka, Y; Tainaka, T; Shirota, C; Chiba, K; Uchida, H; Fujishiro, M

HEPATOLOGY RESEARCH 49 巻 ( 10 ) 頁： 1162 - 1168 2019年10月

記述言語：英語出版者・発行元：Hepatology Research

Aim: Esophagogastric variceal hemorrhage is a cause of poor prognosis in patients with biliary atresia (BA). To prevent variceal hemorrhage, simple and reliable screening methods for high-risk esophagogastric varices (HR-EGV) are needed. We evaluated the efficacy of liver stiffness (LS) and spleen stiffness (SS) as measured by 2-D shear wave elastography (2D-SWE), which was reported to be more accurate than transient elastography, for detecting HR-EGV in children with BA. Methods: Thirty-four children with BA were enrolled. Both LS and SS were measured by 2D-SWE. The presence of large esophageal varices or esophageal varices of any size with red wale marking and/or the presence of gastric varices along the cardia were defined as HR-EGV. Clinical data were collected and previously reported prediction indices for varices were calculated. Results: Liver stiffness and SS were obtained from all patients. Fourteen patients showed HR-EGV. Significantly different variables between patients with and without HR-EGV were as follows: spleen diameter (116 mm vs. 95 mm), clinical prediction rule (104.7 vs. 124.7), King's variceal prediction score (78.8 vs. 99.4), aspartic aminotransferase-to-platelet ratio index (2.03 vs. 0.98), LS (2.63 m/s vs. 1.87 m/s), and SS (4.44 m/s vs. 3.69 m/s). The highest area under the receiver operating characteristic curve for detecting HR-EGV was that for SS (0.900), and the cut-off SS of 4.12 m/s yielded 92.9% sensitivity and 90% specificity. The intraclass correlation coefficient for intra-observer reproducibility was 0.828. Conclusions: Spleen stiffness from 2D-SWE offered the most accurate predictor of HR-EGV in BA children.

DOI： 10.1111/hepr.13381

Nuss procedure for patients with pectus excavatum with a history of intrathoracic surgery

Takanari, K; Toriyama, K; Kambe, M; Nakamura, Y; Uchibori, T; Ebisawa, K; Shirota, C; Tainaka, T; Uchida, H; Kamei, Y

JOURNAL OF PLASTIC RECONSTRUCTIVE AND AESTHETIC SURGERY 72 巻 ( 6 ) 頁： 1025 - 1029 2019年6月

記述言語：英語出版者・発行元：Journal of Plastic Reconstructive and Aesthetic Surgery

Background: The aim of this study was to demonstrate the feasibility and safety of the Nuss procedure for patients with pectus excavatum (PE) with a history of intrathoracic surgery. Patients: From April 2010 to December 2013, we performed 6 cases of PE repair in patients with a history of intrathoracic surgery. The causes of previous operations were congenital cystic adenomatoid malformation in 4 patients and congenital diaphragmatic hernia in 2. The patients’ median age was 5 years (range, 4–9 years) and median preoperative pectus severity index was 4.63 (range, 3.42–10.03). Their intraoperative and postoperative courses were reviewed retrospectively. Results: The mean overall operation time was 127.5 ± 17.0 minutes, and the mean operation time for endoscopic pneumolysis was 28.8 ± 12.3 minutes. Intraoperative exploration for pleural adhesion revealed that the endoscopic approach in the previous operation was associated with low pleural adhesion, and the open thoracotomy or laparotomy approach was associated with low to high pleural adhesion. One patient developed a pneumothorax on the first postoperative day. All the other patients had uneventful postoperative courses. All the patients received bar removal 2–3 years after bar insertion. One patient developed atelectasis after bar removal. All the other patients had an uneventful postoperative course. The mean postoperative follow-up time after bar removal was 20.1 ± 14.7 months. Conclusions: History of intrathoracic surgery seems not a contraindication for the Nuss procedure. However, perioperative complications should be carefully monitored in both the bar insertion and removal operations.

DOI： 10.1016/j.bjps.2018.12.027

A Novel Laparoscopic Surgery Model with a Device to Expand the Abdominal Working Space in Rats: The Influence of Pneumoperitoneum and Skin Incision Length on Postoperative Inflammatory Cytokines Open Access

Murase, N; Tainaka, T; Uchida, H; Hinoki, A; Shirota, C; Yokota, K; Oshima, K; Shirotsuki, R; Chiba, K; Tanaka, Y

JOURNAL OF INVESTIGATIVE SURGERY 32 巻 ( 1 ) 頁： 55 - 60 2019年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Investigative Surgery

Purpose: Experimental models of laparoscopic surgery generally use large animals owing to a sufficient abdominal working space. We developed a novel laparoscopic surgery model in rats. We performed intestinal anastomosis to demonstrate the feasibility and reliability of this model. Materials and Methods: We designed a device for rats that expanded the abdominal working space and allowed us to manipulate the intraperitoneal organs by hand under direct vision with pneumoperitoneum. We performed small bowel resection and intestinal anastomosis in rats using this model. To elucidate the effects of pneumoperitoneum and skin incision length, rats were randomly divided into four groups with differing surgical techniques: small incision group, large incision group, small incision + pneumoperitoneum group, and large incision + pneumoperitoneum group. Intraoperative abdominal pressure and postoperative cytokines were measured. Results: One experimenter completed small bowel resection and hand-sewn anastomosis under direct vision without any difficulties or assistance. Carbon dioxide pneumoperitoneum was maintained at 8–10 mmHg during surgery in both pneumoperitoneum groups. Necropsies revealed no evidence of anastomotic leakage at 24 h after surgery. The interleukin-6 and C-reactive protein concentrations were significantly greater in large incision group than in small incision group, but were not significantly different between small incision + pneumoperitoneum group and small incision group. These cytokines concentrations were the greatest in large incision + pneumoperitoneum group. Conclusions: Our laparoscopic surgery model in rats is a simple and reliable experimental model. The length of skin incision might be a more influential determinant of surgical invasiveness than pneumoperitoneum.

DOI： 10.1080/08941939.2017.1366603

Air test as a simple method of screening for Hirschsprung's disease

Sumida, W; Uchida, H; Ono, Y; Tanaka, Y; Tainaka, T; Shirota, C; Yokota, K; Oshima, K; Chiba, K

CLINICAL RADIOLOGY 73 巻 ( 12 ) 頁： 1041 - 1045 2018年12月

記述言語：英語出版者・発行元：Clinical Radiology

Aim: To present the technique and the diagnostic accuracy of the air test to diagnose Hirschsprung's disease (HD). Materials and methods: Children who attended hospital for chronic constipation (CC) between January 2012 and December 2016 for whom the air test was performed were enrolled. The test was conducted during contrast enema under fluoroscopic observation using 20–50 ml injections of air into the rectum through a 10 F Nelaton catheter. The demographics, results of the air test, and additional examinations, as well as the outcomes of subsequent treatments were analysed retrospectively. Results: The air test was conducted in 179 patients (median: 3 years, range: 0–14 years), and was positive in 150 and negative in 29 cases. Of the 29 patients with negative results, four were diagnosed with HD by rectal suction biopsy (RSB). Of the remaining 25 patients, RSB was conducted in seven and HD was excluded in all cases. In all 150 patients with positive air test results, CC was adequately controlled with conservative treatment. The sensitivity and specificity of the air test were 100% (4/4) and 85.7% (150/175), respectively. Conclusions: The air test can be used as a new non-invasive screening method for HD, performed simultaneously with contrast enema.

DOI： 10.1016/j.crad.2018.08.008

Introduction of resection of intrahepatic bile duct stenosis-causing membrane or septum into laparoscopic choledochal cyst excision Open Access

Tanaka, Y; Tainaka, T; Sumida, W; Hinoki, A; Shirota, C; Murase, N; Oshima, K; Shirotsuki, R; Chiba, K; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 34 巻 ( 10 ) 頁： 1087 - 1092 2018年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: We previously showed that meticulous probing and resection of the intrahepatic bile duct stenosis (IHBDS)-causing membrane or septum was effective in preventing hepatolithiasis after choledochal cyst excisions in open surgeries. Then, we introduced this maneuver into laparoscopic choledochal cyst excisions in 2014 and performed routine resections since then. The aim of this study was to show the feasibility of this method in laparoscopic surgery. Methods: We retrospectively reviewed the demographics and outcomes of patients who underwent laparoscopic choledochal cyst excisions at our hospital between January 2014 and December 2017. The patients who underwent surgical treatment for IHBDS-causing membrane or septum were compared with those who did not undergo the procedure. The outcomes of the patients with IHBDS were also compared between patients who were ≥ 3 years of age and those < 3 years at operation. Results: Seventeen of 35 patients underwent laparoscopic resection of IHBDS-causing membrane or septum. There were no complications related to the procedure although the operative time and intraoperative bleeding amount increased in the patients with IHBDS who were ≥ 3 years of age. Conclusions: Meticulous probing and excision of the IHBDS-causing membrane or septum is safe and feasible during laparoscopic choledochal cyst excision.

DOI： 10.1007/s00383-018-4320-7

Long-term outcomes and complications after laparoscopic-assisted anorectoplasty vs. posterior sagittal anorectoplasty for high- and intermediate-type anorectal malformation

Tainaka, T; Uchida, H; Tanaka, Y; Hinoki, A; Shirota, C; Sumida, W; Yokota, K; Makita, S; Oshima, K; Chiba, K; Ishimaru, T; Kawashima, H

PEDIATRIC SURGERY INTERNATIONAL 34 巻 ( 10 ) 頁： 1111 - 1115 2018年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Laparoscopic-assisted anorectoplasty (LAARP) is a minimally invasive procedure in which the levator ani muscle is left to potentially improve postoperative fecal continence. This study aimed to retrospectively evaluate postoperative complications and long-term outcomes of fecal continence after LAARP and compare them to those after posterior sagittal anorectoplasty (PSARP). Methods: Forty-five male patients with high and intermediate anorectal malformation (aged ≥ 4 years) who underwent LAARP or PSARP (LAARP 29, PSARP 16) from 1999 to 2013 were included. Postoperative complications and postoperative fecal continence were retrospectively evaluated and compared. Postoperative complications were also compared before and after introducing a urethroscope during fistula resection. Results: Complications after LAARP and PSARP were seen in 12 vs. 2 cases (p = 0.09) of mucosal prolapse and in 9 vs. 1 case (p = 0.07) of posterior urethral diverticulum (PUD), respectively. The incidence of PUD decreased after introduction of a urethroscopy from 40% in 8/20 cases to 11% in 1/9 cases. No significant difference was found in terms of fecal continence in both groups. Conclusion: Through our study, greater improvement of postoperative fecal continence after LAARP has not been shown. LAARP was at higher risk for mucosal prolapse and PUD. However, precise dissection of the urethral fistula could be performed after the introduction of urethroscopy.

DOI： 10.1007/s00383-018-4323-4

Investigation of the feasibility and safety of single-stage anorectoplasty in neonates with anovestibular fistula 査読有り Open Access

Shirota, C; Suzuki, K; Uchida, H; Kawashima, H; Hinoki, A; Tainaka, T; Sumida, W; Murase, N; Oshima, K; Chiba, K; Makita, S; Tanaka, Y

PEDIATRIC SURGERY INTERNATIONAL 34 巻 ( 10 ) 頁： 1117 - 1120 2018年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Pediatric Surgery International

Purpose: Anovestibular fistula (AVF) is the most common type of anorectal malformation in females. Delayed anorectoplasty with fistula dilatation is commonly performed during infancy; however, we have been actively performing anorectoplasty in neonates. We report the surgical complications and postoperative defecation function associated with single-stage anorectoplasty performed in neonates. Methods: Patients who underwent surgery for AVF between 2007 and 2017 at two institutions were retrospectively studied. The operation time, amount of bleeding, time to start oral intake, perioperative complications, and Kelly’s score were compared among patients who underwent surgery as neonates and those who underwent surgery as infants. Results: Eighteen neonates and 17 infants underwent anterior sagittal anorectoplasty. The median operation time and time to start oral intake were significantly shorter in the neonatal group (72 min; 3 days, respectively) than in the infant group (110 min, p = 0.0002; 5 days, p = 0.0024, respectively). Postoperative wound disruption was significantly more frequent in the infant group. Of the ten patients each in the neonatal and infant groups, there was no significant difference in Kelly’s score at age ≥ 4 years. Conclusion: Single-stage anorectoplasty in neonates with AVF can be feasibly performed and does not impair postoperative defecation function. Levels of evidence: III.

DOI： 10.1007/s00383-018-4324-3

Oral administration of eicosapentaenoic acid suppresses liver fibrosis in postoperative patients with biliary atresia Open Access

Sumida, W; Uchida, H; Tainaka, T; Shirota, C; Hinoki, A; Kato, T; Yokota, K; Oshima, K; Shirotuki, R; Chiba, K; Tanaka, Y

PEDIATRIC SURGERY INTERNATIONAL 34 巻 ( 10 ) 頁： 1059 - 1063 2018年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: Biliary atresia (BA) is characterized by progressive inflammation of the biliary system. This inflammation persists and causes liver fibrosis, although jaundice disappears after Kasai portoenterostomy (KP). We aimed to confirm whether the oral administration of eicosapentaenoic acid (EPA) suppresses liver fibrosis in postoperative patients with BA. Methods: We reviewed patients who underwent laparoscopic KP (lapKP) between January 2014 and September 2017. From December 2016, 30 mg/kg/day of EPA was orally administered to patients who opted to take medicine (EPA group). Patients who did not receive EPA were assigned to the non-EPA group. Mac-2 binding protein sugar chain modified isomer (M2BPGi) and hyaluronic acid (HA) levels were compared between the two groups in patients showing disappearance of jaundice at 6 months after the first lapKP. Results: Seventeen patients in the non-EPA group and 11 in the EPA group were enrolled. At 6 months after the first lapKP, 10 patients in the non-EPA group and six in the EPA group were without jaundice. M2BPGi and HA levels were significantly lower in the EPA group. Conclusions: Liver fibrosis was suppressed in patients without jaundice 6 months after lapKP, who were administered EPA. We believe that periductular inflammation was alleviated by EPA supplementation.

DOI： 10.1007/s00383-018-4313-6

Single-stage laparoscopic transanal pull-through modified Swenson procedure without leaving a muscular cuff for short- and long-type Hirschsprung disease: a comparative study Open Access

Yokota, K; Uchida, H; Tainaka, T; Tanaka, Y; Shirota, C; Hinoki, A; Kato, T; Sumida, W; Oshima, K; Chiba, K; Ishimaru, T; Kawashima, H

PEDIATRIC SURGERY INTERNATIONAL 34 巻 ( 10 ) 頁： 1105 - 1110 2018年10月

記述言語：英語出版者・発行元：Pediatric Surgery International

Purpose: The Soave procedure (SO) is performed most commonly for Hirschsprung disease. SO reduces the risk of injury to the pelvic structures; however, a residual aganglionic muscle cuff could interfere with bowel movement and lead to obstructive enterocolitis. The Swenson procedure is considered ideal in terms of peristalsis. Currently, laparoscopic surgery provides better visualization and facilitates precise dissection, possibly leading to feasible performance of the laparoscopic modified Swenson procedure (SW). We present our operative technique and the efficacy of the SW compared with that of SO. Methods: We retrospectively reviewed the records of 16 and 27 patients who underwent SW and SO, respectively, between 2012 and 2017. Results: Operative time, blood loss, length of stay, and frequency of bowel movements showed no significant difference between the two groups. In the SW group, temporary dysuria occurred in one patient, postoperative enterocolitis in two, wound infection in one, and severe perianal excoriation in four, whereas in the SO group, obstructive symptoms occurred in three patients, small-bowel obstruction in one, and severe perianal excoriation in three. The complications and outcomes were comparable between both groups. Conclusion: Laparoscopic SW was safe and feasible for the short-term follow-up outcomes.

DOI： 10.1007/s00383-018-4318-1

特集小児外科における消化器内視鏡外科手術胆道閉鎖症に対する腹腔鏡下肝門部空腸吻合術

内田広夫, 田中裕次郎, 田井中貴久, 城田千代栄, 住田亙, 村瀬成彦

手術 72 巻 ( 6 ) 頁： 861 - 870 2018年5月

保存的治療で軽快した特発性大網捻転症の1例 Open Access

横田一樹, 内田広夫, 田中裕次郎, 田井中貴久, 城田千代栄, 檜顕成, 住田亙, 加藤充純, 大島一夫, 千馬耕亮

日本小児外科学会雑誌 54 巻 ( 2 ) 頁： 302 - 306 2018年

記述言語：日本語出版者・発行元：特定非営利活動法人日本小児外科学会

<p>特に既往のない5歳男児．発熱と下腹部痛を認め，急性虫垂炎の疑いで当院を紹介受診した．血液検査で炎症反応の上昇を認めたもののCTでは虫垂の腫大はなく，上行結腸の壁肥厚を認めたため急性腸炎の診断で抗菌薬投与を開始した．再度CTを見直したところ渦巻き状を呈する脂肪吸収値腫瘤を認め，特発性大網捻転症と診断した．症状は軽快していたためこのまま保存的治療を継続し，4日目に軽快退院した．大網捻転症は特に小児では比較的稀な疾患であり，過去においては手術治療が原則とされてきたため，保存的治療例の報告は少ない．症状が類似しているため急性虫垂炎などと診断されて手術が行われる例も多いが，近年はCTなどの画像診断技術の進歩により診断が可能な例が増えてきた．大網捻転症の中には保存的治療が可能なものもあり，大網捻転症と診断できた場合は保存的治療も選択肢の一つとして考慮するべきと考えられた．</p>

DOI： 10.11164/jjsps.54.2_302

The efficacy of resection of intrahepatic bile duct stenosis-causing membrane or septum for preventing hepatolithiasis after choledochal cyst excision

Tanaka, Y; Tainaka, T; Sumida, W; Shirota, C; Hinoki, A; Murase, N; Oshima, K; Shirotsuki, R; Chiba, K; Uchida, H

JOURNAL OF PEDIATRIC SURGERY 52 巻 ( 12 ) 頁： 1930 - 1933 2017年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Pediatric Surgery

Background/purpose We previously found that many patients who developed hepatolithiasis after choledochal cyst excisions had intrahepatic bile duct stenosis (IHBDS). In 1992, we started resection of the membrane or septum which was found at the site of IHBDS during choledochal cyst excisions. Since intrahepatic stones usually take years to form, the efficacy of this procedure has not been proved. Methods The records of patients who had IHBDS-causing membrane or septum and underwent choledochal cyst excision with Roux-Y hepaticojejunostomy between January 1979 and December 2006 were retrospectively analyzed. The patients who underwent surgical treatment for IHBDS-causing membrane or septum were compared with those who did not undergo the procedure. Results Sixty-nine patients met the criteria, and seven patients who were followed up for less than 5 years were excluded from the study. Thirty-three patients underwent surgical treatment for IHBDS, and three of them developed intrahepatic stones. Meanwhile, 10 of 29 patients who did not undergo the procedure developed intrahepatic stones. A statistically significant difference in intrahepatic stone formation was observed between the two groups in a log-rank test (P = 0.016). Conclusions Meticulous probing and excision of the IHBDS-causing membrane or septum are effective for preventing hepatolithiasis after choledochal cyst excisions. Type of study Retrospective Comparative Study. Level of evidence Level III.

DOI： 10.1016/j.jpedsurg.2017.08.056

Comparison of outcomes of thoracoscopic primary repair of gross type C esophageal atresia performed by qualified and non-qualified surgeons

Tanaka, Y; Tainaka, T; Sumida, W; Shirota, C; Murase, N; Oshima, K; Shirotsuki, R; Chiba, K; Uchida, H

PEDIATRIC SURGERY INTERNATIONAL 33 巻 ( 10 ) 頁： 1081 - 1086 2017年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Pediatric Surgery International

Purpose: Although thoracoscopic repair of esophageal atresia has become widespread, most studies are based on operations performed by expert surgeons. Therefore, the outcomes of operations performed by non-expert surgeons are not well known. The aim of this study was to compare outcomes based on operator skill level. Methods: We retrospectively reviewed the demographics and outcomes of patients with Gross type C esophageal atresia, who underwent primary thoracoscopic repair at our hospital between January 2014 and August 2016. Outcomes of surgeries performed by qualified surgeons, as determined by the Japanese Society for Endoscopic Surgery were compared with those of non-qualified surgeons. All operations were performed by or under the supervision of one qualified surgeon. Results: Nine operations were performed by qualified surgeons and six operations by non-qualified surgeons with >10 years of experience in surgery. None of the patients developed anastomotic leakage or recurrent tracheoesophageal fistula. However, the operative time and rate of stricture formation at the beginning of the weaning period were significantly higher in the latter group (P = 0.008 and 0.044). Conclusions: Although supervision of experts would improve results in thoracoscopic repair of esophageal atresia, the results indicate that good skill is necessary to avoid anastomotic stricture.

DOI： 10.1007/s00383-017-4140-1

Review of redo-Kasai portoenterostomy for biliary atresia in the transition to the liver transplantation era Open Access

Sumida, W; Uchida, H; Tanaka, Y; Tainaka, T; Shirota, C; Murase, N; Oshima, K; Shirotsuki, R; Chiba, K

NAGOYA JOURNAL OF MEDICAL SCIENCE 79 巻 ( 3 ) 頁： 415 - 420 2017年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Nagoya Journal of Medical Science

Portoenterostomy (PE) is the standard therapy for biliary atresia (BA). PE offers the chance of survival to children with BA. PE was the ultimate therapeutic modality for BA before liver transplantation (LT) was available. Failure of biliary drainage with PE was almost invariably fatal in children with BA. In such cases, redo-PE was performed to salvage patients following PE failure. PE remains the standard first treatment for BA despite the availability of LT. Further, redo-PE is also performed in a limited number of cases despite the development of LT as an alternative means of PE. However, there is concern that redo-PE increases morbidity at the time of subsequent LT. Laparoscopic redo-PE has recently been described. Laparoscopic redo-PE is expected to reduce complications of LT by preventing abdominal adhesion associated with repetitive surgery. In the present article, the future utility of redo-PE and the history of its changing roles are reviewed.

DOI： 10.18999/nagjms.79.3.415

Two-Stage Thoracoscopic Repair of Long-Gap Esophageal Atresia Using Internal Traction Is Safe and Feasible Open Access

Tainaka, T; Uchida, H; Tanano, A; Shirota, C; Hinoki, A; Murase, N; Yokota, K; Oshima, K; Shirotsuki, R; Chiba, K; Amano, H; Kawashima, H; Tanaka, Y

JOURNAL OF LAPAROENDOSCOPIC & ADVANCED SURGICAL TECHNIQUES 27 巻 ( 1 ) 頁： 71 - 75 2017年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Laparoendoscopic and Advanced Surgical Techniques

Background: The treatment of long-gap esophageal atresia remains an issue for pediatric surgeons. Many techniques for treating long-gap esophageal atresia have been proposed, but the optimal method has not been established. The thoracoscopic esophageal elongation technique has recently been developed. We previously reported a case in which two-stage thoracoscopic repair was performed using internal esophageal traction without esophageal tearing, and we retrospectively reviewed the outcomes of this procedure in this study. Methods: Five patients underwent thoracoscopic treatment involving internal esophageal traction for esophageal atresia involving a long gap or vascular ring over a 5-year period. Results: Between November 2010 and November 2015, 5 patients were treated with thoracoscopic traction. All of these patients successfully underwent thoracoscopic-delayed primary anastomosis. Conversion to open thoracotomy was not required in any case. The postoperative complications experienced by the patients included minor anastomotic leakage in 2 cases, anastomotic stenosis in 1 case, gastroesophageal reflux (GER) in 4 cases, and a hiatal hernia in 1 case. None of the patients died. Conclusions: Two-stage thoracoscopic repair for esophageal atresia involving a long gap or vascular ring is a safe and feasible procedure; however, we must develop methods for treating minor anastomotic complications and GER due to esophageal traction in future.

DOI： 10.1089/lap.2016.0207

Left thoracoscopic two-stage repair of tracheoesophageal fistula with a right aortic arch and a vascular ring Open Access

Oshima, K; Uchida, H; Tainaka, T; Tanano, A; Shirota, C; Yokota, K; Murase, N; Shirotsuki, R; Chiba, K; Hinoki, A

JOURNAL OF MINIMAL ACCESS SURGERY 13 巻 ( 1 ) 頁： 73 - 75 2017年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Minimal Access Surgery

A right aortic arch (RAA) is found in 5% of neonates with tracheoesophageal fistulae (TEF) and may be associated with vascular rings. Oesophageal repairs for TEF with an RAA via the right chest often pose surgical difficulties. We report for the first time in the world a successful two-stage repair by left-sided thoracoscope for TEF with an RAA and a vascular ring. We switched from right to left thoracoscopy after finding an RAA. A proximal oesophageal pouch was hemmed into the vascular ring; therefore, we selected a two-stage repair. The TEF was resected and simple internal traction was placed into the oesophagus at the first stage. Detailed examination showed the patent ductus arteriosus (PDA) completing a vascular ring. The subsequent primary oesophago-oesophagostomy and dissection of PDA was performed by left-sided thoracoscope. Therefore, left thoracoscopic repair is safe and feasible for treating TEF with an RAA and a vascular ring.

DOI： 10.4103/0972-9941.181771

Comparing surgical outcomes of complete thoracoscopic lobectomy for congenital cystic lung disease between neonatal and infantile patients.

Tainaka T, Uchida H, Tanaka Y, Shirota C, Yokota K, Murase N, Oshima K, Shirotsuki R, Chiba K, Hinoki A

Nagoya journal of medical science 78 巻 ( 4 ) 頁： 447-454 2016年12月

Steroid pulse therapy prevents restenosis following balloon dilatation for esophageal stricture. Open Access

Yokota K, Uchida H, Tanano A, Shirota C, Tainaka T, Hinoki A, Murase N, Oshima K, Shirotsuki R, Chiba K

Pediatric surgery international 32 巻 ( 9 ) 頁： 875-9 2016年9月

A new modification of laparoscopic percutaneous extraperitoneal closure procedure for repairing pediatric femoral hernias involving a special needle and a wire loop. Open Access

Tainaka T, Uchida H, Ono Y, Tanano A, Shirota C, Yokota K, Murase N, Makita S, Shirotsuki R

Nagoya journal of medical science 77 巻 ( 3 ) 頁： 531-5 2015年8月

A New Era of Laparoscopic Revision of Kasai Portoenterostomy for the Treatment of Biliary Atresia. Open Access

Murase N, Uchida H, Ono Y, Tainaka T, Yokota K, Tanano A, Shirota C, Shirotsuki R

BioMed research international 2015 巻頁： 173014 2015年

Hepatolithiasis after hepatic portoenterostomy for biliary atresia.

Tainaka T, Kaneko K, Seo T, Ono Y, Ogura Y, Wada H, Shirota C, Ando H

Journal of pediatric surgery 41 巻 ( 4 ) 頁： 808-11 2006年4月

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