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  • Title: Invasion of seminal vesicles by adenocarcinoma of the prostate: PSA outcome determined by preoperative and postoperative factors.
    Author: Bloom KD, Richie JP, Schultz D, Renshaw A, Saegaert T, D'amico AV.
    Journal: Urology; 2004 Feb; 63(2):333-6. PubMed ID: 14972484.
    Abstract:
    OBJECTIVES: To determine which preoperative and postoperative factors were predictive of the time to prostate-specific antigen (PSA) failure after radical retropubic prostatectomy (RRP) for patients with seminal vesicle invasion (SVI). SVI by prostate cancer is associated with high PSA failure rates after RRP and subsequent distant metastases. METHODS: Between 1988 and 2002, 1697 patients with prostate cancer underwent RRP at Brigham and Women's Hospital, of whom 103 (6%) had SVI. Cox regression multivariable analysis was used to determine whether the preoperative PSA level, prostatectomy Gleason score, margin status, or presence of extraprostatic extension was predictive of the time to postoperative PSA failure. Estimates of PSA outcome were made using the actuarial method of Kaplan and Meier for patients who had none, all, or at least one of the factors that predicted for the time to postoperative PSA failure. RESULTS: The statistically significant categorical predictors of the time to PSA failure after RRP in patients with SVI included prostatectomy Gleason score of 4+3 or greater (P = 0.009), preoperative PSA level greater than 20 ng/dL when evaluated as a categorical or as a continuous variable (P = 0.002 and P = 0.001, respectively), and margin positivity (P = 0.075) which was of borderline significance. The 3-year estimate of PSA control was 52% to 100%, 28%, and 0% for patients with negative margins, preoperative PSA less than 20 ng/dL, and prostatectomy Gleason score of 3+4 or less versus having one to two or all three predictors of the time to postoperative PSA failure. CONCLUSIONS: The PSA outcome after RRP for patients with SVI varies depending on the preoperative PSA level, prostatectomy Gleason score, and margin status.
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