[Transrectal longitudinal sonography of the prostate in prostatic cancer].

The transrectal ultrasonography is suited to image the prostate like no other imaging procedure. In a palpatory suspicious prostate with an ultrasonographical echo-poor area a prostatic cancer should be suspected whereas this area in a palpatory normal prostate point to inflammatory changes. In the presence of echo-dense areas or a homogenous external gland a benign change should be assumed.