Analysis of the positive surgical margin cases among robot-assisted radical prostatectomy of localized prostate cancer ─Is the experience of laparoscopic radical prostatectomy related to positive surgical margin? ─

Abstract

  In this study, we examined the positive surgical margin rate and associated risk factors of localized prostate cancer (within pT2 cases) following robot-assisted radical prostatectomy (RARP) in our hospital. From March 2014 to March 2017, 162 consecutive patients who underwent RARP and the pathological results within pT2 were retrospectively reviewed. We defined the operators with experience of more than 50 LRPs as Experts and fewer than 50 as non-Experts. The positive surgical margin rate was 14.8％ (24/162 patients). The most common location was the apex. In multivariate analysis, cT2b was an independent risk factor for a positive surgical margin. The number of experiences of laparoscopic radical prostatectomy (more/fewer than 50) did not contribute to the positive surgical margin rates of RARP.