title: Evaluation of operative biopsy of periampullary tumours.
mesh_terms: D000008:Abdominal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D000368:Aged; D014670:Ampulla of Vater; D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D001660:Biliary Tract Diseases / Q000175:diagnosis; D001706:Biopsy; D003951:Diagnostic Errors; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D005260:Female; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008875:Middle Aged; D010180:Pancreatectomy; D010190:Pancreatic Neoplasms / Q000175:diagnosis*