title: Imaging of idiopathic biliary duct dilatation.
abstract: Gray-scale ultrasonography and 99mTc-HIDA radionuclide scanning are complementary studies which may be helpful in the diagnosis of idiopathic dilatation of the biliary ducts. We present an overview of this entity and representative cases of a Type I choledochal cyst and Caroli's disease.
mesh_terms: D001649:Bile Duct Diseases / Q000175:diagnosis*; D001653:Bile Ducts, Intrahepatic / Q000000981:diagnostic imaging; D002675:Child, Preschool; D003135:Common Bile Duct / Q000000981:diagnostic imaging; D003137:Common Bile Duct Diseases / Q000175:diagnosis; D003560:Cysts / Q000175:diagnosis*; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography; D011877:Radionuclide Imaging; D013577:Syndrome; D013667:Technetium; D014463:Ultrasonography
chemical_list: D013667:Technetium