In 2002 — 2015 yrs in the clinic radical prostatectomy was performed in 403 patients for prostatic cancer, including those having stage cТ3 — in 102 (25.3%). Basing on analysis of main risk factors, a model of prognostic stratification of clinically locally spread prostatic cancer on three groups was created: with low risk — in the absence of data, confirming invasion into seminal vesicles (stage cТ3а), the prostate—specific antigen (PSA) content less than 20 ng/ml, degree of cellular differentiation of tumor (Glisson's index) in accordance to biopsy data — 6 and less; with intermediate risk — while presence of one of unfavorable prognostic factors (stage cТ3b), PSA 20 ng/ml and more, Glisson's index 7 and more; with high risk — while presence of two and more unfavorable prognostic factors. The follow—up duration was 50,6 mo at average. Biochemical recurrence in the groups while low, intermediate and high risk presence have occurred, accordingly, in 14.3, 37.1 and 62.3% patients (р<0.05), and its occurrence risk in patients while intermediate risk present is in 3,5 times, in high risk — in 9.9 times bigger, than in a low risk. Stratification may appear useful for practical physicians and investigators while choosing tactics of treatment in patients with prostatic cancer clinical stage ІІІ
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