Choledochal Cyst

**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.

**Tree numbers:** - C04.182.198 - C06.130.120.127 - C06.198.184 - C16.131.314.184

**Synonyms:** - Choledochocele - Congenital Choledochal Cyst - Bile Duct Cysts