The infected aneurysm has been assumed to be a disease with a poor prognosis due to the occurrence of aneurysmal ruptures and sepsis, in contrast to the outcome of atherosclerotic aneurysms. In the present study, we conducted surgical treatment on five patients with infected aneurysms (infected abdominal aortic aneurysm in three cases and iliac artery aneurysm in two cases). In particular, two of the three patients suffering from infected abdominal aortic aneurysms underwent extra-anatomic bypass and the remaining one case underwent vascular graft replacement in situ. In the two patients who underwent an extra-anatomic bypass, an aneurysm was found at the site of aortic stump closure. In the patient who underwent in situ replacement, wrapping was carried out using the omentum after vascular graft replacement, and the postoperative course was uneventful. Accordingly, we consider that the optimum primary therapeutic intervention for infected aneurysms is in situ revascularization followed by wrapping with the omentum after removal of the aneurysm and debridement of the surrounding infected tissue to the maximum extent possible.
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