Aortoenteric fistula

An aortoenteric fistula is a connection between the aorta and the intestines, stomach, or esophageus. There can be significant blood loss into the intestines resulting in bloody stool and death. It is usually secondary to an abdominal aortic aneurysm repair. The third or fourth portion of the duodenum is the most common site for aortoenteric fistulas, followed by the jejunum and ileum.

Not to be confused with Aortic aneurysm, Abdominal aortic aneurysm, Aortic dissection, Aortic rupture, Aortic stenosis, Aortic insufficiency, or Coarctation of the aorta.
Aortoenteric fistula
Aorto enteric fistula and aortic dissection of the thoracic aorta. Arrow shows the flap in the aorta. Heterogeneity is blood in the stomach
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