[Primary aortoenteric fistula]
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Updated: Oct 5, 2026

Technical Aspects of the Mouse Aortocaval Fistula
Published on: July 11, 2013
E Argañin1, A da S Minas, M Klein
1Servicio de Clínica Médica, Clínica Modelo, Lanús, Provincia de Buenos Aires, Argentina.
Abstract:
Aortoenteric fistulas are a very unlikely cause of digestive bleeding. We present the case of a fifty six year old patient with a primary aortoduodenal fistula who consulted because of melena and a pulsating abdominal mass. He underwent three digestive endoscopies without arriving at any diagnosis. A computed axial tomography and an angiography showed an aneurysm of the abdominal aorta. With an exploring laparotomy a fistula was identified between the aneurysm and the fourth portion of the duodenum. An aortoaortic bypass was carried out followed by a surgical fix of the duodenum. The patient was released six days after the operation.
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