title: Nonopacification of the gallbladder and bile ducts. A previously unreported cause.
mesh_terms: D001658:Biliary Fistula / Q000000981:diagnostic imaging; D002758:Cholangiography; D002765:Cholecystography; D005747:Gastric Fistula / Q000000981:diagnostic imaging; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging