Robot-assisted partial nephrectomy in 95 consecutive patients: Oncological and functional outcomes at 3 years of follow-up

Background: We present the oncological and functional results from a series of 43 patients with renal tumours, treated consecutively with robot-assisted partial nephrectomy (RPN). Materials and method: Between 2010 and 2014, we performed 95 RPNs. To assess the results, we included only those patients (n = 43) who had a minimum follow-up of 2 years. A descriptive analysis was conducted of the demographic characteristics and perioperative variables. We employed Kaplan-Meier curves to assess overall survival, cancer-specific survival and recurrence-free survival. Results: The patients' mean age was 53.1 +/- 13.5 years. The mean preoperative tumour size was 3.7 +/- 2.3 cm. The mean surgical time was 102.2 +/- 37.1 min. The mean ischemia time was 21.27 +/- 7.74 minutes, with a median intraoperative bleeding volume of 150 mL (IQR, 87.5-425). There was a 7% rate of postoperative complications (Clavien >= III). There was no mortality. The average Furhman grade was 2.5 +/- 0.56. There were no positive surgical margins or local recurrences. The median follow-up was 38 +/- 8 months, with an overal survival, recurrence-free survival and cancer-specific survival of 100% at 3 years of follow-up. The recurrence-free survival was 92,3% at 48 months of follow-up. The mean preoperative glomerular filtration rate was 91.04 +/- 28.17 mL/min/1.73 m(2), and the postoperative rate was 89.9 +/- 27.69 mL/min/1.73 m(2), with a nonsignificant reduction (P=.74). Conclusions: The functional and oncological results of our series confirm the safety and efficacy of RPN. RPN offers optimal preservation of renal function and oncological control in the medium term. (C) 2015 AEU. Published by Elsevier Espana, S.L.U. All rights reserved.