title: Rupture of a spontaneous aortoduodenal fistula visualized with Tc-RBC scintigraphy.
abstract: We present what we believe is the first reported case of a spontaneous aortoduodenal fistula, with massive rupture into the duodenum during the performance of a radionuclide study of gastrointestinal bleeding. Our experience suggests that nuclear scintigraphy with labeled red blood cells can help in the diagnosis of this disorder by demonstrating both the presence of an abdominal aortic aneurysm and bleeding in the gut.
mesh_terms: D000368:Aged; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging; D001018:Aortic Diseases / Q000000981:diagnostic imaging*; D001019:Aortic Rupture / Q000000981:diagnostic imaging; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D004912:Erythrocytes; D005402:Fistula / Q000000981:diagnostic imaging*; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging*; D008297:Male; D011877:Radionuclide Imaging; D012422:Rupture, Spontaneous; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium
chemical_list: D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m