title: Primary carcinoma of the duodenum.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D000368:Aged; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D004380:Duodenal Obstruction / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography