Cancer - Kidney(구연) (NP-023) R.E.N.A.L.nephrometry 점수 10점 이상의 복잡성 신종양 환자에서의 개복 및 로봇 보조 부분 신절제술의 비교 분석 서울대학교 의과대학 비뇨기과학교실, 분당서울대학교병원 비뇨기과 김정권, 이학민, 오종진, 이상철, 홍성규, 이상은, 변석수 Purpose To compare the outcomes of robotic partial nephrectomy (RPN) with those of open PN (OPN) in patients with highly complex renal tumors defined as RENAL nephrometry score ≥ 10 Materials and Methods We analyzed clinical data from a total of 149 patients who underwent OPN or RPN for a highly complex renal mass at our institution between 2003 and 2017. Perioperative data, complication profiles, functional outcomes, pathologic variables, and oncologic outcomes were evaluated in both groups. Results The median (interquartile range, IQR) patient age was 52.0 (42.0-59.0) years, and the median (IQR) follow-up period was 30.0 (7.0-54.0) months. Among the patients, 64 (43.0%) and 85 (57.0%) underwent OPN and RPN, respectively. The RPN group showed higher rates of clinical T1b and ≥ T2 than the OPN group (p=0.019). There were no significant differences between the groups in terms of intraoperative outcomes such as operation time, estimated blood loss, warm ischemic time, and transfusion. Notably, the RPN group showed significantly shorter length of hospital stay than the OPN group (p < 0.001, Table 1). Regarding the complication profiles and renal functional outcomes, no significant differences were reported between the groups. The estimated glomerular filtration rate decline from baseline at the last follow-up showed no significant differences between the two groups (p=0.351). Kaplan-Meier survival analysis also showed no significant differences in survival outcomes between the groups (log-rank test, all p > 0.05). Conclusions RPN performed in patients with highly complex renal tumors offers perioperative, functional, and oncologic outcomes comparable to those associated with OPN. keywords : partial nephrectomy, RENAL nephrometry score, robotic