title: [Diagnosis of extrahepatic cholangiocarcinoma and carcinoma in the region of ampulla of Vater and carcinoma of the head of pancreas by a control study].
authors.forename: B Q
authors.initials: BQ
authors.lastname: Luan
mesh_terms: D002759:Adenoma, Bile Duct / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D014670:Ampulla of Vater; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging*; D002758:Cholangiography; D002760:Cholangiopancreatography, Endoscopic Retrograde; D003138:Common Bile Duct Neoplasms / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging*