title: Types I and III choledochal cyst. Preoperative diagnosis by ultrasound.
abstract: The presence of a choledochal cyst can be determined ultrasonographically. In two cases, the specific diagnosis of a choledochal cyst was made by identifying a bile duct that entered directly into a large cystic mass that was separate from the gallbladder.
mesh_terms: D002648:Child; D003135:Common Bile Duct / Q000473:pathology; D003137:Common Bile Duct Diseases / Q000151:congenital / Q000175:diagnosis*; D003560:Cysts / Q000151:congenital / Q000175:diagnosis*; D005260:Female; D005704:Gallbladder / Q000473:pathology; D006801:Humans; D014463:Ultrasonography