Endovascular Treatment of a Giant Renal Vein Aneurysm Arising from a High-Flow Arteriovenous Fistula.

Renal vein aneurysms (RVAs) are considered rare clinical entities. RVAs can be secondary to thrombosis, venous hypertension, or renal arteriovenous fistula (RAVF). RVAs secondary to RAVF are rare.