Transrectal MR-guided laser focal therapy of recurrent prostate cancer in a patient post-proton therapy: A case study.

e298 Background: Prostate cancer is commonly managed with radical prostatectomy (RP) or radiation therapy (RT). 20-40% of men undergoing RP experience biochemical recurrence (BCR) before 10 years. 30-50% or those receiving RT experience BCR. Treatment options for these men are limited and include: salvage radiation, close surveillance, androgen deprivation therapy (ADT), or participation in a clinical trial. Our IRB-approved study evaluated the use of transrectally delivered, MR-guided laser focal therapy with real-time MR thermometry for the treatment of recurrent prostate cancer. Methods: 63 y.o. patient treated September, 2014 with MR-guided laser focal salvage therapy for locally recurrent prostate cancer, Gleason score 4+5 involving the transition zone far anteriorly at the base level measuring 1.4 x 1.1 x 1.3 cm. The patient was originally diagnosed with Gleason score 4+3 adenocarcinoma of the prostate by MR ultrasound fusion biopsy in 2012 and subsequently underwent treatment with proton beam radia...