title: Computed tomography of localized dilatation of the intrahepatic bile ducts.
abstract: Twenty-nine patients showed localized dilatation of the intrahepatic bile ducts on computed tomography, usually unaccompanied by jaundice. Congenital dilatation was diagnosed when associated with a choledochal cyst, while cholangiographic contrast material was helpful in differentiating such dilatation from a simple cyst cy showing its communication with the biliary tract when no choledochal cyst was present. Obstructive dilatation was associated with intrahepatic calculi in 4 cases, hepatoma in 9, cholangioma in 5, metastatic tumor in 5, and polycystic disease in 2. Cholangioma and intrahepatic calculi had a greater tendency to accompany such localized dilatation; in 2 cases, the dilatation was the only clue to the underlying disorder.
mesh_terms: D002759:Adenoma, Bile Duct / Q000000981:diagnostic imaging; D001649:Bile Duct Diseases / Q000000981:diagnostic imaging; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging; D001653:Bile Ducts, Intrahepatic / Q000000981:diagnostic imaging*; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging; D002779:Cholestasis / Q000000981:diagnostic imaging; D003137:Common Bile Duct Diseases / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed