A FEASIBILITY STUDY OF CRYOTHERAPY FOLLOWED BY RADICAL PROSTATECTOMY FOR LOCALLY ADVANCED PROSTATE CANCER

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Abstract
There has been a significant shift toward multimodality therapy to try to eradicate extracapsular disease better in patients with locally advanced prostate cancer. We assess the feasibility and complications of initial cryotherapy followed by radical prostatectomy, and evaluate the frequency and location of viable benign and malignant prostate tissue and positive surgical margins after this treatment combination. A total of 12 patients with clinical stage T3 cancer or clinical stages T1c to T2, Gleason score 8 to 10 cancer on the initial biopsy were treated with initial cryotherapy followed by open surgical exploration 2 to 8 days later. If pelvic lymph nodes were negative, radical prostatectomy was performed. Prostate specific antigen was measured approximately every 3 months postoperatively, and complications were assessed by retrospective chart review and a quality of life survey. Radical prostatectomy was aborted in 5 patients with positive pelvic lymph nodes. Of the 7 patients who underwent prostatectomy 4 had no residual prostate cancer in the specimen (pathological stage pT0 disease). All 7 of these patients had focal areas of viable normal prostate glands. Only 1 of the 7 patients had a positive surgical margin and biochemical failure (mean followup 22.6 months). The main complications of cryotherapy followed by radical prostatectomy were urinary incontinence and impotence. Neoadjuvant cryotherapy achieved complete tumor destruction in 4 of 7 patients with locally advanced prostate cancer. Cryotherapy followed by radical prostatectomy was associated with substantial morbidity, mainly in terms of urinary incontinence.