An aortoduodenal fistula is a rare, severe complication after open abdominal aortic aneurysm repair. A case of an aortoduodenal fistula after open abdominal aortic aneurysm repair who was saved is reported. A 70-year-old man had undergone open abdominal aortic repair with a bifurcated graft 3 years ago. He complained of fever and lower back pain during the two weeks prior to his presentation. Vascular prosthesis infection was suspected based on these symptoms, and antibiotic therapy was

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... d by the patient's previous physician. Melena and hematemesis developed a few days before, and the patient was transferred to our hospital. An aortoduodenal fistula was diagnosed on enhanced computed tomography, and emergency surgery was performed. The operative findings showed partial perforation of the anterior wall of the proximal anastomotic pseudoaneurysm into the duodenum. In situ prosthetic reconstruction, omental flap coverage of the graft, and primary suture closure of the defect of the duodenal wall were performed. The patient's postoperative course was uneventful, and he was discharged from hospital on foot postoperative day 44. Key words:aortoduodenal fistula,graft infection,abdominal aortic aneurysm