Aortic aneurysm rupture into the retroaortic left renal vein (RALRV) is an uncommon phenomenon. We herein present the case of a 66-year-old man with left flank pain, hematuria, fever, and symptoms of acute right-sided heart failure. Computed tomography angiography (CTA) demonstrated an 83-mm infrarenal aortic aneurysm with a fistula in between the aorta and the RALRV. The patient underwent an urgent endovascular aneurysm repair and a proximal cuff extension due to type Ia endoleak. In the early postoperative period, transcaval coil embolization was performed, 3 months later repeated CTA revealed recanalized fistula, after fluid embolization and vascular plug implantation control CTA showed no sign of endoleak. The patient recovered uneventfully, 1-year follow-up CTA demonstrated aneurysm shrinkage and no sign of endoleak.
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