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  • Title: Role of early adjuvant hormonal therapy after radical prostatectomy for prostate cancer.
    Author: Zincke H, Lau W, Bergstralh E, Blute ML.
    Journal: J Urol; 2001 Dec; 166(6):2208-15. PubMed ID: 11696737.
    Abstract:
    PURPOSE: Recent prospective randomized studies have shown that adjuvant hormonal therapy combined with local treatment can significantly improve overall survival in patients with locally advanced disease. This finding challenges the previous belief that adjuvant hormonal therapy may not be beneficial for minimal stages TxN + M0 or less prostate cancer, particularly when combined with local treatment. We reviewed the benefits of adjuvant hormonal therapy in patients at risk for disease progression, especially when administered after radical prostatectomy. MATERIALS AND METHODS: We retrospectively reviewed the current literature and evaluated clinical information on stage pT3b cancer from a large single institution prostate cancer database to determine the current role of adjuvant hormonal therapy after radical prostatectomy for prostate cancer. RESULTS: Retrospective experimental and clinical studies have proved the impact of adjuvant hormonal therapy for decreasing prostate specific antigen (PSA) and clinical disease progression in patients with regionally limited prostatic cancer. This finding applies to stage pT3b as well as to lymph node positive cancer. Our literature review and current data from the Mayo Clinic database show that adjuvant hormonal therapy after prostatectomy has a significant impact on prostate specific antigen (PSA) progression but it also decreases systemic progression and cause specific death in patients with stage pT3b and lymph node positive disease. After adjusting for preoperative PSA, margins, grade, ploidy and patient age the risk ratio for stage pT3b disease in 707 cases was 0.3 (95% confidence interval 0.2 to 0.7). A recent prospective randomized trial showed a significant decrease in cancer death in N+ cases when adjuvant hormonal therapy was administered after radical prostatectomy, supporting previous Mayo Clinic data on N+ disease that favors combination therapy. In the PSA era, that is 1987 and after, our database data on stage pTxN+ cancer indicates that radical prostatectomy and hormonal therapy for single node positive disease resulted in 94% 10-year cause specific survival, which was not significantly different from the rate in patients with N0 disease after adjusting for local stage, Gleason grade, margins, ploidy, PSA and adjuvant hormonal therapy. CONCLUSIONS: Our literature review, including prospective randomized studies, and more recent results in the PSA era from our database indicate that early adjuvant hormonal therapy has a significant impact on time to progression and cause specific survival in patients with seminal vesicle invasion and limited lymph node disease who undergo radical prostatectomy, although in a retrospective nonrandomized study. Future prospective studies with longer followup are needed to evaluate the potential benefit of adjuvant treatment in regard to survival for stages pT2 and pT3a disease with unfavorable pathological variables.
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