treated with bilateral nerve sparing (bNS) RP and free from adjuvant/ salvage treatment at the time of EF assessment. Local polynomial regression analyses explored changes in the outcomes over time. Linear and logistic regression analyses estimated the influence of year of surgery on baseline variables and EF recovery. RESULTS: A total of 1544 (96%) patients received a bNS surgery; of them, 1465 and 1421 were free from adjuvant/salvage treatment after 12 and 24 mos, respectively. EF recovery rates at both 12 and 24-mos post-RP significantly decreased over time (p¼0.02 and p¼0.01, respectively). However, patient 0 s age at surgery increased over time (mean increase of 0.5 per year; p<0.01), with a resultant increase in risk of comorbidity (OR¼1.1, p¼0.02) and thus decrease in baseline IIEF-6 score (0.4 points per year; p<0.01). There was an increase in the rate of patients treated with robotic RP (OR: 1.3; p<0.01) with a decrease of open and laparoscopic RP (all p<0.01) throughout the same time frame. After accounting for age, baseline IIEF-6, comorbid- ities, use of PDE5is and type of surgery in a multivariable analysis, year of surgery was not associated with EF recovery (12 mos: OR 0.97, 95% CI:0.91-1.03, p¼0.4; 24 mos: OR: 0.97, 95%CI: 0.91-1.03,p¼0.3). CONCLUSIONS: Findings from a high-volume center suggest that, despite the advancements in surgical and post-operative care, EF outcomes after RP have not improved over the last decade. Additional strategies are required to improve EF recovery after radical prostatectomy. Source of Funding: None MP11-13 QUALITY OF LIFE AFTER SURGERY FOR LOCALIZED PROSTATE CANCER Andrew Wang, M.D., Paul McClain, M.D.*, Jack Lambert, M.D., Norfolk, VA; Shaun Wason, M.D., Boston, MA; Michael Williams, M.D., John Malcolm, M.D., Kurt McCammon, M.D., F.A.C.S., Michael Fabrizio, M.D., F.A.C.S., Robert Given, M.D., F.A.C.S., Norfolk, VA INTRODUCTION AND OBJECTIVES: This study is a retro- spective review designed to assess the impact of treatment type on quality of life (QOL) in a large database of men who underwent surgery for prostate cancer METHODS: 373 patients underwent robot-assisted laparo- scopic radical prostatectomy (RALP), brachytherapy, or cryotherapy for prostate cancer at a single institution from 2010-2014. Five quality of life domains (urinary incontinence, urinary irritative/obstructive, bowel, sexual, and hormonal symptoms) were assessed preoperatively and again at 1-60 months after treatment using the Expanded Prostate Cancer Index Composite (EPIC-26) questionnaire. Outcomes were compared across treatment modalities using univariate and multivariate analysis. RESULTS: All quality of life domains were affected by prostate cancer treatment. The mean follow-up time after surgery was 41 months. Urinary incontinence worsened significantly in the RALP and brachytherapy groups (p < 0.001). The cryotherapy group achieved a return to baseline urinary continence at 6 months and had significantly better continence QOL than the brachytherapy group at 30 months (p ¼ 0.021). Brachytherapy patients had significantly worse irritative/ obstructive voiding symptoms compared to RALP patients at 30 months (p < 0.001), and also experienced a 55% slower rate of return to baseline. Bowel function was significantly worse in brachytherapy pa- tients compared to RALP patients at 30 months (p ¼ 0.037). The cryotherapy and brachytherapy groups had a 36% slower recovery of bowel function. Cryotherapy was associated with the worse sexual function than brachytherapy at 30 months (p ¼ 0.012), although all three groups were affected. Minimal impact on hormonal function was observed long-term. CONCLUSIONS: Due to the high survival of patients who receive treatment for prostate cancer, quality of life is a major concern when choosing therapy. Each prostate cancer treatment studied above has a unique recovery profile. Long term, RALP is associated with the least urinary irritative and obstructive symptoms, whereas cryotherapy is associated with the least impact on urinary incontinence but the greatest impact on sexual function. Brachytherapy was correlated with the greatest decline in bowel function. All three modalities have minimal effect on hormonal function. Source of Funding: None MP11-14 PROPENSITY MATCHED COMPARATIVE ANALYSIS OF CHARACTERISTICS OF POSITIVE SURGICAL MARGIN AND ONE YEAR MINIMAL ONCOLOGICAL OUTCOME FOLLOWING CONVENTIONAL ROBOT-ASSISTED RADICAL PROSTATECTOMY VS RETZIUS-SPARING ROBOT-ASSISTED RADICAL PROSTATECTOMY Lawrence H C Kim*, Ali Raheem, Glen D Santok, Kidon Chang, Trenton Lum, Byung Ha Chung, Young Deuk Choi, Koon Ho Rha, Seoul, Korea, Republic of INTRODUCTION AND OBJECTIVES: A randomised controlled trial demonstrated that Retzius-Sparing Robot-Assisted Radical Pros- tatectomy (RS-RARP) showed superior early continence rate to con- ventional anterior approach. To the best of our knowledge, there is a paucity of information on its oncological efficacy and this is the first study to compare oncological parameters between the two techniques. We aimed to compare the characteristics of PSM and short term oncological outcome between conventional RARP (C-RARP) and RS-RARP. METHODS: A 1:1 propensity score matching was performed to compare PSM and its significance on oncological outcome between C-RARP and RS-RARP cohorts. Both techniques were performed by a high volume single surgeon (KHR). Age, BMI, prostate volume, pre- operative PSA, clinical T stage and Gleason score at biopsy were included for propensity matching. Incidence, location and multifocality of PSM as well as biochemical recurrence (BCR) were analysed and compared between the two techniques. Kaplan-Meyer curve was used to estimate and compare biochemical recurrence free survival (BCRFS) e132 THE JOURNAL OF UROLOGY â Vol. 199, No. 4S, Supplement, Friday, May 18, 2018