Carcinomas of the ampulla of vater and the duodenum.
D000230:Adenocarcinoma / Q000175:diagnosis; D000231:Adenocarcinoma, Papillary / Q000175:diagnosis; D014670:Ampulla of Vater; D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D003951:Diagnostic Errors; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D006801:Humans; D010183:Pancreatic Ducts