PMID: 7539857Jul 1, 1995Paper

A multivariate analysis of clinical and pathological factors that predict for prostate specific antigen failure after radical prostatectomy for prostate cancer

The Journal of Urology
A V D'AmicoA Wein

Abstract

A Cox regression multivariate analysis was done to determine the clinical and pathological indicators that predict for prostate specific antigen (PSA) failure in 347 patients who underwent radical prostatectomy for clinically localized prostate cancer between 1989 and 1993. In the patient subgroups (PSA less than 20 ng./ml. and biopsy Gleason sum 5 to 7 or PSA more than 10 to 20 ng./ml. and biopsy Gleason sum 2 to 4) not classifiable into those at high and low risk for postoperative PSA failure using PSA and biopsy Gleason sum, the status of the seminal vesicles and prostatic capsule on endo-rectal coil magnetic resonance imaging (MRI) allowed for this categorization. Specifically, 2-year actuarial PSA failure rates were 84% versus 23% in patients with and without seminal vesicle invasion, respectively, on MRI (p < 0.0001) and 58% versus 21% in those with and without extracapsular extension, respectively (p = 0.0001). In patients with extracapsular extension but without pathological involvement of the seminal vesicle(s) or poorly differentiated tumors (pathological Gleason sum 8 to 10), the 2-year actuarial PSA failure rates were 50% (margin positive), 28% (margin negative with established extracapsular disease) and 9% (margin ...Continue Reading

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