Congenital billary dilatation: review of 132 cases.

Objective To evaluate the clinical features,the classification and complication of congenital billary dilatation(CBD).Methods Retrospective study on the clinical data of 132 cases with CBD were made from January 2001 to August 2008 in Chinese PLA General Hospital.According to Todani' classification of congenital choledochal cyst to classify.Results 80.3% cases belonged to type Ⅰ;0.76% to type Ⅱ and type Ⅲ;18% to type Ⅳ,15.9% to type Ⅳa,1.5% to type Ⅳb;0.76% to types Ⅴ.16.7% to Caloli disease.70% cases were chronic cholecystitis;12.1% cases were recurrent cholangeitis;41.7% cases were biliary calculi;16.7% cases were stricture of bile duct;6.0% cases were biliary cirrhosis.10.6% cases were carcinoma;3.8% cases were renal polycyst.Conclusion Type Ⅰ is the most common in choledochal cyst.Type Ⅱ,type Ⅲ and type Ⅴ were the less common.The most common Complication were chronic cholecystitisand biliary calculi.The frequency of malignant transformation was approximately 10%.