Robot-assisted radical prostatectomy in the Korean population: A 5-year propensity-score matched comparative analysis versus open radical prostatectomy

Kyo Chul Koo, Patrick Tuliao, Young Eun Yoon, Byung Ha Chung, Sung Joon Hong, Seung Choul Yang, Koon Ho Rha

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Objectives: To compare the oncological outcomes of robot-assisted laparoscopic radical prostatectomy with those of open radical prostatectomy in contemporary Korean prostate cancer patients. Methods: From a group of 1172 patients consisting of 592 (50.5%) robot-assisted laparoscopic radical prostatectomy and 580 (49.5%) open radical prostatectomy cases carried out between 1992 and 2008, 175 robot-assisted laparoscopic radical prostatectomy cases were matched with an equal number of open radical prostatectomy cases by propensity scoring based on patient age, preoperative prostate-specific antigen, biopsy Gleason score and clinical tumor stage. Competing-risks survival analyses were used to evaluate oncological outcomes, including rates of positive surgical margin, biochemical-recurrence, adjuvant therapy, cancer-specific survival, overall survival and metastasis-free survival during the mean follow up of 58.4months. Results: Positive surgical margin rates were comparable between robot-assisted laparoscopic radical prostatectomy and open radical prostatectomy cohorts (19.4% vs 21.8%), with comparable rates for all pathological stages and risk subgroups. Positive surgical margin rates according to location were comparable, with the apical margin being the most common location. Robot-assisted laparoscopic radical prostatectomy recovered higher lymph node yields compared with open radical prostatectomy (12.5 vs 3.8; P<0.001). The robot-assisted laparoscopic radical prostatectomy and the open radical prostatectomy groups showed equal oncological outcomes regarding 5-year biochemical recurrence-free survival (log-rank P=0.651), metastasis-free survival (log-rank P=0.876), cancer-specific survival (log-rank P=0.076) and overall survival (log-rank P=0.648), respectively. Between groups, there was no difference in the rate of adjuvant therapy, time to first adjuvant therapy failure or in the rate of subsequent secondary treatment. Conclusions: Robot-assisted laparoscopic radical prostatectomy represents an effective surgical approach for the treatment of prostate cancer in the Korean population, as it provides equivalent oncological outcomes to open radical prostatectomy.

Original languageEnglish
Pages (from-to)781-785
Number of pages5
JournalInternational Journal of Urology
Issue number8
Publication statusPublished - 2014 Aug

All Science Journal Classification (ASJC) codes

  • Urology


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