(within 6 months) was 4.2% [3.8% (AdV) vs. 4.4% (XP); p¼1.000]. There was no postoperative bleeding, urethral erosion, and impaired wound healing. Total postoperative complication rates were 16.7% (AdV) and 15.7% (XP) respectively (p¼0.863). There were no Clavien 4 or 5 complications. Univariate analysis showed no signif- icant influence of history of pelvic irradiation, urethral stricture, pre- operative pad usage, body-mass-index and age. CONCLUSIONS: In the current study, we provide comparative data from a large multi-institutional patient cohort. Complication pro- files vary between the AdVance and AdVanceXP transobturator male slings. AdVanceXP implantation leads to significantly decreased de- novo urgency rates, decreased device dislocation rates, and increased urinary retention rates, the latter ones without reaching statistical significance. Both AdVance and AdVanceXP implantation are safe procedures. Source of Funding: none MP87-19 THE IMPACT OF STEROID USE ON ARTIFICIAL URINARY SPHINCTER REOPERATION Roderick Clark*, Jennifer Winick-Ng, Andrew McClure, Blayne Welk, London, Canada INTRODUCTION AND OBJECTIVES: Artificial urinary sphinc- ters (AUS) are used treat male stress incontinence, often following radical prostatectomy. Previous research has suggested that 1 in 4 men require a second AUS-related operation after 5 years, due to AUS complications or recurrent incontinence. Corticosteroids are associated with impaired wound healing and infections in the surgical setting, and are commonly used in the treatment of metastatic prostate cancer, and for various inflammatory diseases. The objective of this study was to determine if oral steriod use was associated with an increased risk of AUS related reoperation. METHODS: We used administrative data from the province of Ontario, Canada to conduct a retrospective cohort study. Our popula- tion was men >65 years of age, who underwent implantation of an incident AUS between April 1st 2002 and December 31st 2013. Our primary outcome was the first reoperation on the AUS for any reason. Our primary exposure was defined as a filled prescription for an oral corticosteroid at the time of AUS implantation, or during followup (but prior to any AUS reoperation); we considered men to be exposed from the first day of the prescription to 180 days after the last day of medi- cation. Our primary analysis was a cox proportional hazards model with steroid usage as a time varying covariate. RESULTS: We identified 747 men, (median age 71, IQR 68- 75), of which 592 (79.3%) had a prior radical prostatectomy, and 29 (3.9%) had prior primary radiation therapy for prostate cancer. The median cohort follow-up was 3.2 (IQR 1.3-5.9) years. 175/747 (23.4%) were exposed to corticosteroids during the study period (median duration of prescription was 22.0 days, IQR 5.0-133.0). We identified an initial AUS reoperation in 176/747 men (23.5%) a median of 1.4 years (IQR 0.4-3.0) after implantation. In our primary analysis, with adjustment for age, radiation exposure, and year of implantation, the hazard ratio for subsequent reoperation on the AUS among steroid users was 1.75 (95% CI 1.08-2.84, p¼0.02). CONCLUSIONS: To our knowledge this is the first observa- tional study to demonstrate the significant increased risk in reopera- tion among men taking oral steriods. This risk factor should be considered in patient counselling, and further studies evaluating the specific utilization patterns of steroids and their association with AUS complications may be warranted. Given the potential cost and morbidity associated with AUS reoperation, potential strategies for reducing the harmful effects of steroids on wound healing (such as retinoid supplementation) could be further studied among AUS pa- tients on steriod therapy. Source of Funding: none MP87-20 THE EFFICACY AND SAFETY OF PROXIMAL ARTIFICIAL URINARY SPHINCTER PLACEMENT IN REVISION CASES: A SINGLE INSTITUTION EXPERIENCE. Lanette Rickborn, Catherine Chen*, Scott Swanson, Christopher Wolter, Phoenix, AZ INTRODUCTION AND OBJECTIVES: Post-prostatectomy in- continence is a major concern for prostate cancer patients and can significantly decrease the quality of life. Artificial urinary sphincter (AUS) placement yields high success rates and patient satisfaction, and is considered the gold standard in treating this problem. However, revision surgeries are commonly needed for infection, erosion, atrophy/persis- tent incontinence, and mechanical failure. There are many different types of revisions, including cuff downsizing, distal placement, trans- corporal placement, tandem cuff placement, and proximal placement. The purpose of this study is to evaluate the feasibility, efficacy and safety of proximal AUS placement in revision cases. METHODS: A retrospective database of patients who under- went AUS placements from 1994-2015 by nine surgeons at a single institution was reviewed. Two surgeons performed the revision opera- tions. The revision type, reason for revision, and stress urinary incon- tinence outcomes were evaluated. RESULTS: A total of 213 AUS cases were performed from 1994 to 2015, with 185 cases done from 2008 to 2015 by 2 surgeons (SKS and CEW). 69 of these cases were revision cases. Of this group, 24 were proximal cuff placements and 20 were tandem cuff placements. Tandem cuffs were placed with at least one cuff proximal to the original cuff; thus, 64% (44/69) of the revisions consisted of proximally placed cuffs in some form. The other 36% consisted of downsizing (n¼10), distal placement (n¼6), transcorporal (n¼3) and unspecified (n¼6). 13 cases of 69 revision cases were second revisions. In this group, 3 cases were performed for device malfunction/loss of fluid, 1 for urethral atrophy, 8 for persistent urinary incontinence, and 1 for erosion. Excluding those done for device malfunction or fluid loss, 4 cases that were secondary revisions had proximal placement for their prior revi- sion. Thus, 91% (40/44) of the proximally placed revisions were suc- cessful from a technical standpoint, and did not require or seek further treatment in this time period. CONCLUSIONS: It is our belief that AUS revision works best when the replacement cuff is placed on a healthy segment of the ure- thra, rather than downsizing at the universally atrophic segment seen at the previous cuff site. The proximal urethra is often accessible and robust in size, allowing for increased expectations of success. Although proximal AUS revisions can be technically more challenging, they can be done safely with great success rates. Source of Funding: none Kidney Cancer: Localized: Ablative Therapy & Active Surveillance Podium Tuesday, May 10, 2016 8:00 AM-10:00 AM PD46-01 COMPARISON OF RADIATION DOSAGES BETWEEN CT-GUIDED AND ULTRASOUND-FACILITATED CT-GUIDED PERCUTANEOUS CRYOABLATION OF SMALL RENAL CORTICAL NEOPLASMS Rahul Dutta*, Kamaljot Kaler, Simone L Vernez, Zhamshid Okhunov, Ramy F Youssef, Jaime Landman, Kari Nelson, Orange, CA INTRODUCTION AND OBJECTIVES: Percutaneous cryoa- blation (PCA) under computed tomography (CT) guidance is a recent e1122 THE JOURNAL OF UROLOGY â Vol. 195, No. 4S, Supplement, Tuesday, May 10, 2016