Ring Suture Technique in Retroperitoneal Laparoscopic Partial Nephrectomy for Hilar Cancer: A New Renorrhaphy Technique

Abstract Background and Purpose: To evaluate the safety and efficacy of a ring suture technique during retroperitoneal laparoscopic partial nephrectomy (RLPN) for management of renal cell carcinoma (RCC) in the renal hilum. Patients and Methods: Data for patients with renal hilar cancer who underwent RLPN from January 2010 to March 2015 were collected. All surgeries involved the ring suture technique, following the same procedure: the renal artery was dissected and clamped, the tumor was enucleated from the kidney, defects of the vascular and collecting system were repaired, and then the edge of the renal parenchyma was sutured continuously along the border. Finally, the renal artery clamp was removed, and any injury of the vascular system was repaired if necessary. We retrospectively analyzed renal ischemic time, blood loss, and postoperative complications. Results: Among the 17 patients, 11 were male (median age 61 years, range 42–71 years). Mean tumor diameter was 3.4 ± 0.9 cm and median R.E.N.A.L. nep...