Cancer - Bladder, Pelvis, Ureter & Others(비디오) (V-001) 상부 요로상피암이 발생한 중복요관에 대한 로봇 반신요관적출술 : 증례 보고 분당서울대학교병원 비뇨의학과 서울대학교 의과대학 비뇨의학교실 김환익, 예창희, 김정권, 이상은, 홍성규, 이상철, 오종진, 이학민, 변석수 Introduction: It is unsual that urothelial carcinoma is present in duplicated ureter and Diagnostic and therapeutic approaches are challenging. We demonstrate robotic hemi-nephroureterectomy for midureter mass in duplicated ureter for upper moiety portion in Upper tract urothelial carcinoma. Methods: We performed robotic left hemi-nephroureterectomy in a 72-year-old male with a 2cm sized left mid ureter mass. For this approach, the patient was placed in Trendelenburg, and a 6-port transperitoneal technique was used. We describe key steps, including (1) Both moiety vessel preparation, (2) Upper moiety Kidney exposure and dissection, (3) Intraoperative ultrasonography delineating upper moiety, (4) Hemi-nephrectomy and reconstruction, and (5) Distal ureterectomy. Results: Robotic left hemi-nephroureterectomy was successfully completed using Partial nephrectomy approach performed in our center. Total operative time was 187 minutes, and console time was 140 minutes. EBL was 200 cc without perioperative transfusion. There was no minor and major postoperative complication observed. The patient was discharged on postoperative day 4. Final pathology was Urothelial cell carcinoma, and pathologic stage was T3 high grade with negative surgical margin. The postoperative course was uneventful. No additional therapy was administered. Conclusion: We demonstrate robotic left hemi-nephroureterectomy. This approach allowed normal renal parenchymal preservation leading to less-deteriorated renal function and good oncological outcome. Also, this novel method will be the new step for minimally invasive surgical management of urothelial carcinoma in duplicated ureter. keywords : Robotic hemi-nephroureterectomy, duplicated ureter, upper tract urothelial carcinoma