Type C Pancreaticobiliary Maljunction Is Associated With Perforated Choledochal Cyst in Children

Linlin Zhu,Xiong Huang,Jiangbin Liu,Zhibao Lv,Jing Xiong,Weijue Xu

doi:10.3389/fped.2020.00168

Linlin Zhu, Xiong Huang + Show 4 more

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https://doi.org/10.3389/fped.2020.00168

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Abstract

Background: Perforation of a choledochal cyst (CC) is not rare, but the pathogenesis of spontaneous perforation has not been established. Pancreaticobiliary maljunction (PBM) is commonly seen in association with choledochal cyst. To explore the relationship between PBM and perforated CC, a retrospective study was conducted.Methods: We analyzed all the patients with CC who underwent surgery in our hospital from 2014.06.01 to 2018.12.31. All patients were divided into two groups: group 1 were patients with perforated CC, and group 2 were patients with non-perforated CC. We recalled all the patients records to identify types of PBM. PBM was divided into four types [(A) stenotic type, (B) non-stenotic type, (C) dilated channel type, and (D) complex type] according to the classification proposed by the Committee on Diagnostic Criteria of the Japanese Study Group on Pancreaticobiliary Maljunction (JSGPM) in 2015.Results: There were 186 patients with CC in all, and 116 patients showed PBM. Twenty patients in group 1 and 96 patients in group 2. There was an extremely higher percentage of type C PBM in group 1 than in group 2 (60 and 17.7%, respectively). More fusiform dilatation cases were found in group 1 (70%) than in group 2 (58.3%). Also there were more type C PBM in fusiform cases and type A PBM were frequently seen in cystic cases (P < 0.01).Conclusions: We found that Type C PBM and fusiform common bile duct maybe relate to the perforation of choledochal cyst. Patients with type C PBM and fusiform common bile duct should be treated more proactively, preferably before they perforate.

Highlights

Choledochal cyst (CC) is a rare congenital disorder characterized by dilatation of the bile duct
CC is mostly associated with pancreaticobiliary maljunction (PBM), where the biliary and pancreatic ducts converge outside the duodenal wall beyond the confluence of the sphincter of Pancreaticobiliary Maljunction in Perforated Choledochal Cyst
Using the following imaging methods: magnetic resonance cholangiopancreatography (MRCP) and intraoperative cholangiopancreatography (IOCP), common bile duct types were defined as cystic type (Todani Ia and Ib, Todani VIa with length-width ratio

Summary

Introduction

Choledochal cyst (CC) is a rare congenital disorder characterized by dilatation of the bile duct. It occurs in one out of 1,000 persons in Asia, while less frequently in one out of 50,000–150,000 individuals in the West, with the predominance of females over males being 3:1 [1, 2]. CC is mostly associated with pancreaticobiliary maljunction (PBM), where the biliary and pancreatic ducts converge outside the duodenal wall beyond the confluence of the sphincter of Pancreaticobiliary Maljunction in Perforated Choledochal Cyst. This abnormal anatomical communication allows 2way regurgitation of pancreaticobiliary and biliopancreatic reflux and has serious clinical sequelae such as pancreatitis and cholangitis, and possibly the development of biliary carcinoma over the long term [3]. To explore the relationship between PBM and perforated CC, a retrospective study was conducted

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