Abstract
Subclinical infections of the prostate can increase the prostate-specific antigen (PSA) values in patients with normal digital rectal examination. This study aimed to evaluate the role of short-term antimicrobial therapy in reducing the PSA value in patients as candidates for transrectal biopsy. Fifty-eight patients with negative digital rectal examination and PSA values between 4 and 20 ng/mL were included in the study. Antibiotics were administered to all patients for 3 weeks, and the PSA was reassessed 10 days after the end of the treatment. Patients were subsequently submitted to prostate biopsy. A reduction in PSA was detected in 34 patients (59%). Mean percentage reduction was 32%. In only six patients (10%) did the PSA return to normal levels. Prostate biopsy revealed prostate cancer in 26 patients (45%). Prostate cancer was not detected in patients with PSA levels above 4 ng/mL. Prostate biopsy can be avoided only in a small number of patients showing the normalization of PSA levels after short-term antimicrobial therapy. These patients should be strictly monitored with frequent PSA determinations.
Published Version
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