Cancer - Kidney(구연) (NP-017) The effect of retroperitoneal approach at robotic partial nephrectomy for post-operative VAS pain score: Match-Paired Case-Control Study 계명대학교 의과대학 비뇨기과학교실 변혜진, 정원호, 하지용, 김병훈, 박철희, 김천일 Object: We compared the perioperative and functional outcomes between trans-peritoneal robotic partial nephrectomy (TRPN) and retro-peritoneal robotic partial nephrectomy (RRPN). Materials and Methods: We retrospectively reviewed the data of 64 patients who underwent robotic partial nephrectomy (RPN) between July 2013 and July 2018. TRPN was conducted 50 patients and RRPN was conducted 14 patients. Patient pairs were matched based on age at operation, RENAL nephrometry score and pre-operative GFR. Patient demographics, operative and post-operative outcomes were compared. Results: From 65 patients with RPN, 14 pairs were matched. There were no significant differences in mean age (58.64 vs 60.29yr), gender (M:F; 8:6 vs 8:6), body mass index (24.56±2.82 vs 24.93±2.74 kg/m2), tumor size (29.57±13.92 vs 28.50±12.65mm), RENAL nephrometry score (6.29±1.68 vs 6.29±1.68), and pre-operative GFR (92.96±24.74 vs 86.23±23.36 mL/min/1.73 m2). For perioperative outcomes, the operative time (174.79±48.57 vs 158.57±49.05min), Warm ischemic time (15.86±4.62 vs 15.99±6.44min) and estimated blood loss (234.29±234.71 vs 157.86±156.40ml) were not different between both groups. The rate of eGFR <90% that compared to pre-operation (28.6% vs 28.6%) also no significant different. But, at RRPN group showed significantly low post-operative maximal VAS pain score (6.43±1.09 vs 4.79±2.08, p=0.015). Conclusion: There were no differences for perioperative and functional outcomes between TRPN and RRPN. But RRPN group has low post-operative VAS pain score and has been felt more comfortable. keywords : partial nephrectomy