Giant sporadic renal angiomyolipoma treated with nephron-sparing surgery.

Angiomyolipoma is a benign renal tumor that tends to grow with time and can be associated with complications, such as hemorrhage and pain, requiring active intervention. Nephron-sparing surgery for sporadic renal angiomyolipomas offers preservation of renal function and is associated with acceptable complication and recurrence rates. Preoperative embolization of the large tumors is recommended to avoid excess blood loss during surgery. We report a case of giant renal angiomyolipoma treated with preoperative embolization, followed by partial nephrectomy without complications.