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Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.
Salvage cryotherapy for recurrent prostate cancer after radiation therapy: the Columbia experience.
Urology 2000 January
OBJECTIVES: Cryotherapy of the prostate represents a potential treatment for localized recurrent prostate cancer after radiation therapy. We report our experience and evaluate the predictive factors for prostate-specific antigen (PSA) recurrence.
METHODS: Between October 1994 and April 1999, 43 patients underwent salvage cryoablation. All patients had biopsy-proven recurrent prostate cancer without seminal vesicle invasion, negative bone scans, and negative lymph node dissection. Patients had received 3 months of combined hormonal therapy before cryosurgery. Biochemical recurrence-free survival (bRFS) was defined as a PSA value less than 0.1 ng/mL.
RESULTS: Complications included incontinence (9%), obstruction (5%), urethral stricture (5%), rectal pain (26%), urinary infection (9%), scrotal edema (12%), and hematuria (5%). The mean follow-up was 21.9 months (range 1.2 to 54). Twenty-six patients (60%) reached a serum PSA nadir less than 0.1 ng/mL, 16 (37%) had a PSA less than 4 ng/mL, and 1 (3%) had a PSA less than 10 ng/mL. The bRFS rate was 79% at 6 months and 66% at 12 months. The bRFS rate was higher for patients who had an undetectable postcryotherapy PSA than for patients who did not reach a PSA less than 0. 1 ng/mL (73% versus 30%, P = 0.0076). Using multivariate analysis, a PSA nadir greater than 0.1 ng/mL was an independent predictor of PSA recurrence.
CONCLUSIONS: Current salvage cryotherapy of the prostate can result in undetectable serum PSA levels with low morbidity. Our data support the current safety and efficacy profile. We believe that cryotherapy is a viable option in the treatment of patients who have biopsy-proven local failure after radiation therapy for prostate cancer. Further refinements in technique and equipment may enhance cryosurgical results.
METHODS: Between October 1994 and April 1999, 43 patients underwent salvage cryoablation. All patients had biopsy-proven recurrent prostate cancer without seminal vesicle invasion, negative bone scans, and negative lymph node dissection. Patients had received 3 months of combined hormonal therapy before cryosurgery. Biochemical recurrence-free survival (bRFS) was defined as a PSA value less than 0.1 ng/mL.
RESULTS: Complications included incontinence (9%), obstruction (5%), urethral stricture (5%), rectal pain (26%), urinary infection (9%), scrotal edema (12%), and hematuria (5%). The mean follow-up was 21.9 months (range 1.2 to 54). Twenty-six patients (60%) reached a serum PSA nadir less than 0.1 ng/mL, 16 (37%) had a PSA less than 4 ng/mL, and 1 (3%) had a PSA less than 10 ng/mL. The bRFS rate was 79% at 6 months and 66% at 12 months. The bRFS rate was higher for patients who had an undetectable postcryotherapy PSA than for patients who did not reach a PSA less than 0. 1 ng/mL (73% versus 30%, P = 0.0076). Using multivariate analysis, a PSA nadir greater than 0.1 ng/mL was an independent predictor of PSA recurrence.
CONCLUSIONS: Current salvage cryotherapy of the prostate can result in undetectable serum PSA levels with low morbidity. Our data support the current safety and efficacy profile. We believe that cryotherapy is a viable option in the treatment of patients who have biopsy-proven local failure after radiation therapy for prostate cancer. Further refinements in technique and equipment may enhance cryosurgical results.
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