Primary Gleason pattern as a predictor of disease progression in gleason score 7 prostate cancer: a multivariate analysis of 823 men treated with radical prostatectomy

The American Journal of Surgical Pathology
C M HermanT M Wheeler

Abstract

Gleason score (GS) is a powerful predictor of disease progression in men with prostate cancer (PCa). The majority of clinically localized prostate cancers, however, are moderately (GS5/6) or moderate to poorly (GS7) differentiated tumors with indeterminate prognosis. Differences in disease progression between patients with GS5/6 and GS7 tumors suggest the presence of any component of high-grade tumor (Gleason pattern [GP] 4/5) worsens prognosis markedly. Indeed, McNeal et al. have shown that quantification of GP4/5 provides prognostic information beyond the standard GS. Few investigators have analyzed whether primary and secondary GPs are important prognostically within GS7 PCa. All 823 whole-mount radical prostatectomy specimens with GS7 from a single surgeon (P.T.S.) were analyzed. Tumors were either 3+4 or 4+3, and primary GP was assigned by the same pathologist (T.M.W.). A total of 643 patients with 3+4 tumors and 180 patients with 4+3 tumors were studied. Statistical analysis using the log-rank test showed a significant difference in recurrence-free survival between patients with primary GP4 and those with GP3 (p <0.0001). However, in multivariate analysis with preoperative prostate-specific antigen, total tumor volume, su...Continue Reading

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Citations

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