Primary aortoduodenal fistula in a patient with a history of intravesical therapy for bladder cancer with bacillus Calmette-Guérin: Review of primary aortoduodenal fistula without abdominal aortic aneurysm

Photograph obtained during duodenoscopy revealing well-visualized adherent thrombus in third portion of duodenum.

A, Abdominal computed tomography scan revealing what appeared to be 5-cm infrarenal abdominal aortic aneurysm with contrast penetrating the thrombus. This was later interpreted as contrast extravasation into the duodenum. B, A representative slice of comparison abdominal computed tomography scan from 1 year before presentation revealing no evidence of abdominal aortic aneurysm.