MP31-17 COMPARISON OF RETROPERITONEAL AND TRANSPERITONEAL ROBOTIC PARTIAL NEPHRECTOMY BY PENTAFECTA PERIOPERATIVE AND RENAL FUNCTIONAL OUTCOMES

INTRODUCTION AND OBJECTIVES:To compare and analyze surgical, oncological and functional outcomes of transperitoneal robotic partial nephrectomy (TRPN) and retroperitoneal RPN (RRPN).METHODS:Out of 566 consecutive renal cell carcinoma patients who underwent RPN by a single surgeon from December 2008 to July 2017, 523 patients (TRPN 310, RRPN 213) who evaluated preoperative and 1-year postoperative estimated glomerular filtration rate (eGFR) were analyzed. Primary endpoint was to compare Pentafecta criteria (negative surgical margin, no 30-day complication, warm ischemic time (WIT) ≤ 25 minutes, return of eGFR to >90% from baseline and no upstaging of chronic kidney disease) between TRPN and RRPN. Secondary endpoint was to find the factors associated with Pentafecta criteria.RESULTS:No significant difference was found in terms of age, body mass index, laterality, history of hypertension or diabetes, American Society of Anesthesiologists grade, tumor size and RENAL nephrometry score. Operative time, WIT and ...