Causes of postoperative anastomosis stenosis and stone formation after surgical treatment of congenital biliary dilatation        ZHANG Yong-jie, YU Wen-long. Eastern Hepatobiliary Surgery Hospital, the Second Military Medical University, Shanghai 200438, China
Corresponding author: ZHANG Yong-jie, E-mail： yjoy005@sina.com
Abstract    Excising the cyst as completely as possible with separating the biliary tree from the pancreatic duct is the main goal of surgical treatment of congenital biliary dilatation (CBD). However, the quality of choledochoenterostomy is significantly related with the prognosis of the patient, so the surgical treatment should follow the basic bile duct surgery principle. Anastomotic stricture is the most common reason of poor prognosis after the operation of CBD. It can be divided into two types: one type is “relatively narrow” of the biliary-enteric anastomosis after internal drainage of cysts or partial cyst excision with cystenterostomy; the another type of anastomotic stricture in its usual sense is because of too high bile duct resection margin, the original structural abnormalities of hilar bile duct, untreated intrahepatic choledochal cyst or poor anastomotic technique. In order to treat CBD more rationally, it is important to analyse the cause of postoperative anastomosis stenosis and stone formation.