[Endosonography of the prostate].

The role of transrectal prostate ultrasonography (TRUS) for screening and early detection is controversial due to its low sensitivity and specificity. The digital rectal examination (DRE) in combination with PSA still remains useful in screening for prostate cancer. Less than 4% of patients with normal DRE and normal PSA have prostate cancer found on random biopsies. We recommend TRUS for exact determination of prostate volume, in patients with suspicious DRE findings, in combination with the Biopty gun for ultrasound-guided biopsies, and in staging before radical prostatectomy.