A retrospective analysis was done on the outcomes of 278 patients who underwent radical prostatectomies at our institutions from November, 1994 to April, 2006. The treatment outcomes measured were disease-specific survival and prostate specific antigen (PSA) biochemical failure-free survival rates. Univariate and multivariate analyses were performed on patient age, clinical T-stage, Gleason sum at the time of prostate biopsy, PSA value before treatment, and any patient history of neoadjuvant hormone therapy. For all patients, the overall survival and the disease-specific survival rates at 10 years were 96.3 and 99.3%, respectively, with PSA biochemical failure-free survival rates at 5 and 10 years of 67.9 and 55.1%, respectively. On multivariate analysis, both the PSA values (> 20 ng/ml) and Gleason sums (> or = 7) were statistically significant independent risk factors for PSA biochemical failure after radical prostatectomy. Neoadjuvant hormone therapy was found to have no effect on PSA biochemical failure.