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The clinical experience relating to the detection of prostate cancer in patients participating in 2 large multicenter clinical trials of finasteride in the treatment of benign prostatic hyperplasia is reviewed. A total of 1,645 patients 40 to 83 years old with benign prostatic hyperplasia was randomized to receive 1 or 5 mg finasteride or placebo once a day for 12 months in a double-blind fashion followed by an open extension study in which all patients were treated with 5 mg finasteride daily. At entry, all patients were to have a maximum urinary flow rate of 15 ml per second or less with a voided volume of 150 ml or more, an enlarged prostate and symptoms of urinary obstruction. Patients with a prostate specific antigen level of 40 ng/ml or more, or any finding suggestive of prostate cancer were excluded. During the study period 32 cases of prostate cancer were diagnosed: 12 were detected during the 12 months of the controlled study and were evenly distributed among the treatment groups (4 on placebo, and 3 on 1 mg and 5 on 5 mg finasteride) and 20 cases were detected in the extension study. From these results we conclude that finasteride-treated patients should be evaluated periodically by digital rectal examination, careful monitoring of prostate specific antigen levels and appropriate investigation of any suspicious findings.

Type

Journal article

Journal

J Urol

Publication Date

05/1994

Volume

151

Pages

1296 - 1300

Keywords

Aged, Double-Blind Method, Finasteride, Humans, Male, Middle Aged, Palpation, Prostate-Specific Antigen, Prostatic Hyperplasia, Prostatic Neoplasms