title: Duodeno-duodenal fistula--a manifestation of carcinoma of the colon.
abstract: Two cases of duodeno-duodenal fistula complicating carcinoma of the right colon, both presenting with upper gastrointestinal hemorrhage, are presented. The close proximity of the ascending colon and hepatic flexure and their draining lymphatics to the duodenum are discussed.
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000150:complications*; D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications*; D004378:Duodenal Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D004386:Duodenum / Q000000981:diagnostic imaging*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging* / Q000209:etiology; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D011859:Radiography