Biliary parasites.
D001196:Ascariasis / Q000150:complications / Q000000981:diagnostic imaging*; D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D002758:Cholangiography; D003003:Clonorchiasis / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans