Definition : 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. [MeSH];
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. [MeSH]