Secondary Aortoduodenal Fistula Diagnosed after Repeated Gastrointestinal Bleeding Episodes in a Patient With Prior Aortic Graft Surgery.

ABSTRACT: Secondary aortoduodenal fistula (sADF) is a rare but life-threatening complication after aortic graft surgery. Diagnosis is often challenging, particularly when contrast-enhanced computed tomography (CT) and endoscopy results are inconclusive. We report a case in which diagnosis was challenging due to contrast media allergy and non-diagnostic endoscopic findings, highlighting the importance of clinical suspicion in such scenarios. A 76-year-old man with a history of graft replacement for a ruptured abdominal aortic aneurysm presented with five episodes of gastrointestinal bleeding over 3 months. Despite multiple examinations, no bleeding source was identified. Eventually, after the patient developed hypovolemic shock, contrast-enhanced CT was performed with informed consent, which revealed

SUBMITTER: Kubota J 

PROVIDER: S-EPMC12328087 | biostudies-literature | 2026 Apr

REPOSITORIES: biostudies-literature