[Effect of rectal examination in patients with prostatic adenoma on concentration of prostatic specific antigen (PSA) in plasma].

The results are presented of a study in 88 patients with prostatic adenoma in whom plasma PSA concentration was determined before rectal examination and 1 and 24 hours after it. The mean value of PSA concentration before the examination was about 6.9 ng/ml (maximal value 27.0 ng/ml, minimal value 0.3 ng/ml, SD 6.2). After the examination (after 1 and 24 hours) an increase of PSA concentration occurred and it was 7.7 ng/ml (maximal value 28.9 ng/ml, minimal value 0.5 ng/ml, SD 6.7) and 8.6 ng/ml (maximal value 28.0 ng/ml, minimal value 0.5 ng/ml, SD 7.9), respectively. It was found that in the studied patients with prostatic adenoma an increase of plasma PSA concentration occurred after per rectum examination.