Super-Selective Artery Embolization before Laparoscopic Partial Nephrectomy in Treating Renal Angiomyolipoma

To investigate the feasibility and efficiency of super-selective artery embolization (SAE) before laparoscopic partial nephrectomy (LPN) in treating renal angiomyolipoma (RAML).A retrospective analysis was conducted on 36 consecutive patients who underwent SAE before LPN (group A, n = 16) or LPN directly (group B, n = 20) from June 2010 to March 2016. Intraoperative blood loss, blood transfusion, operation time, warm ischemia time (WIT), and prognosis were compared between groups.SAE before LPN decreased operating time, intraoperative blood loss and WIT (p < 0.05), and improved postoperative renal function (p < 0.001). Complications in group B included intraoperative blood loss of 4 patients and postoperative hematuria of 2 patients who recovered a few days later. No complications were observed in group A. In the follow-up of 3 months, a patient in group B formatted retroperitoneal hematoma without any symptoms and received expectant treatment.The application of SAE before LPN can decrease the difficulty of the surgery, the complications, and the risk of rebleeding and RAMLs recurrence.