Cancer - Kidney(구연) Oral Session 5 / Cancer - Kidney (Ⅰ) (O-047) Grand Ballroom(2F) 11월28일(수) 14:00-15:00 T1b 투명세포 신장 암에서의 신장 부분절제는 근치적 신절제술에 비해 종양학적으로 안전한가? 울산대학교 의과대학, 서울아산병원 비뇨기과 임범진, 최세영, 경윤수, 안동현, 김휘우, 이원철, 채한규, 이재훈, 최원석, 유달산, 송채린 정인갑, 홍범식, 홍준혁, 안한종, 김청수 Objective: To compare the oncologic outcomes in patients treated with partial nephrectomy and radial nephrectomy in T1b clear renal cell carcinoma.. Methods: We identified 326 patients who underwent partial nephrectomy or radial nephrectomy in T1b clear renal cell carcinoma between 2002 and 2011. In this retrospective chart review, clinicopathologic data were analyzed. Patients were divided into the 2 groups according to operation method Results: The two groups of patients were similar in age, sex, preoperative creatinine. There were no differences in tumors size (5.1vs 5.4cm, P = 0.062) and pathological stage distribution between the two group. The median follow-up after partial nephrectomy and radial nephrectomy were 73 (range: 6-127) and 70 (3-155) months, respectively. Recurrence -free survival duration was 123.0±3.0 in patient underwent partial nephrectomy, which is shorter than radical nephrectomy.(136.2 ±3.0) but it was not statistically significant.( P = 0.189) Conclusions: Partial nephrectomy is superior to preserve renal function compared to radical nephrecomy. In our study, there is no difference in recurrence-free survival between partial nephrectomy and radical nephrecomy. Partial nephrectomy is an effective treatment option in appropriately selected patients with T1b RCC. keywords : Renal cell carcinoma, T1b , partial nephrectomy