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A Case of Isolated Internal Iliac Artery Aneurysm with Arteriovenous Fistula
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（Department of Cardiovascular Surgery, Anjo Kosei Hospital, Anjo, Japan, Department of Cardiovascular Surgery, Toyooka Hospital＊, Toyooka, Japan, and Department of Cardiovascular Surgery, Kobe City Medical Center General Hospital＊＊, Kobe, Japan)
| Yu Shomura |
Michihiro Nasu＊ |
Yukikatsu Okada＊＊ |
| Hiroshi Fujiwara＊＊ |
Tadaaki Koyama＊＊ |
Toru Mizumoto |
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We report a case of left internal iliac aneurysm that ruptured into the left common iliac vein and formed an arteriovenous fistula. A 79-year-old man who had general fatigue was admitted to our hospital with a diagnosis of left internal iliac artery aneurysm, left hydronephrosis, dehydration and low renal function. After dehydration and low renal function resolved rapidly by medical treatment, an enhanced computed tomography was performed. This demonstrated a 69 by 67 mm diameter left internal iliac artery aneurysm with an arteriovenous fistula. During the operation, left common iliac artery and left external iliac artery were resected and the stumps sutured. External iliac-external iliac artery bypass was performed. An occlusive balloon catheter was inserted from the left femoral vein and the balloon was dilated to patch the fistula before opening the aneurysm. After clamping the proximal artery the aneurysm was opened. Bleeding from the fistula was controlled by this maneuver and digital compression of the left common iliac vein where was proximal side of fistula. An arteriovenous fistula with a 18 by 3mm orifice was found between the left internal iliac artery and left common iliac vein. The fistula was closed from the inside of the aneurysm. His postoperative course was uneventful.
Jpn. J. Cardiovasc. Surg. 42:438-441（2013）
Keywords：arteriovenous fistula, iliac artery aneurysm, occlusive balloon catheter
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