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A Journal on Surgery

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Chirurgia 2006 June;19(3):227-9

language: English

An infected internal iliac artery aneurysm causino an arterio-colonic fistula

Kin H. 1, Okubo T. 1, Kazui T. 1, Hanaoka T. 2, Suzuki T. 3

1 Department of Cardiovascular Surgery Nakadori General Hospital, Japan
2 Department of General Surgery Nakadori General Hospital, Japan
3 Department of Radiology Nakadori General Hospital, Japan


A 70-year-old man presented with fever and hematochezia after coil embolization of a collateral artery to an internal iliac artery aneurysm. The patient had undergone Y-graft replacement for an abdominal aortic aneurysm 12 years previously. Five years following the first operation, he underwent replacement of the left common iliac artery due to formation of left common and internal iliac artery aneurysms. The left internal iliac artery was not reconstructed at that time, but merely excluded because of severe adhesions. However, due to progressive dilatation of the left internal iliac artery, the patient was treated by coil embolization to occlude collateral arteries. Colonoscopy revealed a bleeding ulcer in the sigmoid colon. Computed tomography revealed a left internal iliac artery aneurysm containing air. At operation, aneurysmectomy and an end descending colostomy were performed. There was no evidence that the previously implanted graft was infected. The postoperative course was uncomplicated. An ilioenteric fistula is an extremely rare and unlikely complication of coil embolization of the collateral artery to the internal iliac artery aneurysm.

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