Transperitoneal versus retroperitoneal laparoscopic partial nephrectomy: initial experience.

ABSTRACT

OBJECTIVE: We present the transperitoneal and retroperitoneal approaches to laparoscopic partial nephrectomy and compare the outcomes of each technique. METHODS: Between December 2006 and March 2010, retroperitoneal laparoscopic partial nephrectomy (RLPN) was performed in 23 patients and transperitoneal laparoscopic partial nephrectomy (TLPN) in 26 patients. They were compared regarding surgical technique, operative parameters, postoperative recovery and follow-up data. The 2 approaches used similar operative techniques to control parenchymal bleeding. RESULTS: The patient demographics were similar in both groups. The mean tumour size was 3.1 cm in the retroperitoneal group and 3.4 cm in the transperitoneal group. The difference was not statistically significant (p 0.095). The mean operative time was significantly longer in the transperitoneal group (215 vs 185 minutes, p 0.031). The mean warm ischemia time difference was not statistically significant (25 vs 28 minutes, p 0.102). The mean estimated blood loss (EBL) was greater in the transperitoneal group (254 vs 204 cc, p 0.003). Moreover, the mean hospital stay was 4.1 days in the RLPN and 4.3 days in the TLPN group (p 0.303) The difference was not statistically significant. The median follow-up was 11 months (range 2 to 35) in the retroperitoneal group and 13 months (range 1 to 36) in the transperitoneal group. CONCLUSIONS: Our experience has shown that laparoscopic partial nephrectomy is a safe, feasible technique for patients with small exophytic renal tumours. We believe that the decision regarding the approach should be based on the tumor location on the kidney surface.