Choledochal Cyst

Choledochal Cyst, Diverticulum; Choledochal Cyst, Type II; Choledochal Cyst, Type III; Choledochal Cyst, Type IV; Choledochal Cyst, Type V; Choledochal Diverticulum; Choledochocele; Cyst, Common Bile Duct; Cysts, Common Bile Duct
A congenital anatomic malformation of a bile duct, including cystic dilatation of the extrahepatic bile duct or the large intrahepatic bile duct. Classification is based on the site and type of dilatation. Type I is most common.