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학술저널
저자정보
정연수 (서울대학교 분당병원 비뇨기과) 이동환 (서울대학교 분당병원 비뇨기과) 이민승 (분당서울대학교병원) 김학주 (서울대학교 분당병원 비뇨기과) 이상철 (서울대학교 의과대학 서울대학교 분당병원 비뇨기과) 홍성규 (서울대학교) 변석수 (서울대학교) 이상은 (서울대학교) 오종진 (서울대학교)
저널정보
대한비뇨기과학회 Investigative and Clinical Urology Investigative and Clinical Urology Vol.61 No.2
발행연도
2020.1
수록면
158 - 165 (8page)

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Purpose: To evaluate the impact of diagnostic ureteroscopy performed before radical nephroureterectomy (RNU) on intravesical recurrence (IVR) in patients with upper tract urothelial carcinoma (UTUC). Materials and Methods: From May 2003 to December 2018, patients who underwent RNU for UTUC were enrolled and divided into two groups according to whether they underwent preoperative ureteroscopy (Pre-U vs. Non-U). We excluded patients who had a history of bladder cancer and did not receive bladder cuff resection during surgery. Perioperative parameters were compared between the two groups by use of t-tests or chi-square tests. Kaplan–Meier and Cox proportional hazards analyses were used to assess the association between Pre-U and IVR. Results: Of the 453 total patients, 226 patients (49.9%, Pre-U group) had received diagnostic ureteroscopy before RNU, and 227 patients (50.1%, Non-U group) had not. IVR occurred in 99 patients (43.8%) in the Pre-U group and 61 patients (26.9%) in the Non-U group (p=0.001). The median time to recurrence was 107 months. The 5-year IVR-free survival rates were 56.2% and 73.1% in the Pre-U and Non-U groups, respectively (log rank test, p<0.001). Multivariate Cox proportional hazards analysis showed that Pre-U was a significant factor (hazard ratio, 1.413; 95% confidence interval, 1.015–1.965; p=0.040) after adjustment for other factors including tumor stage, location, etc. Conclusions: Preoperative diagnostic ureteroscopy before RNU was a significant factor for IVR. Therefore, we should carefully consider Pre-U before RNU for nonobvious ureteral lesions. These results should be validated in a prospective study.

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