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Updated: May 4, 2026

Technical Aspects of the Mouse Aortocaval Fistula
Published on: July 11, 2013
Aorto-left renal vein fistula caused by a ruptured abdominal aortic aneurysm
Hideya Tanaka1, Kozo Naito1, Junichi Murayama1
1Department of Cardiovascular Surgery, Saga Prefectural Medical Center Koseikan, Nakahara, Saga, Japan.
Abstract:
Retroaortic left renal vein is a malformation in which the left renal vein courses dorsal to the abdominal aorta. In patients with abdominal aortic aneurysm, an aorto-left renal vein fistula can form if the left renal vein is sandwiched between the aneurysm wall and lumbar vertebrae. The patient was an 84-year-old man with lower back pain. We performed a contrast-enhanced computed tomography (CT), although renal dysfunction was noted. The CT showed a ruptured juxta-renal abdominal aortic with aorto-left renal vein fistula. This clinical condition can cause severe renal dysfunction, in spite of which an enhanced contrasted CT scan would be extremely informative preoperatively.
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