[Transrectal and intravesical sonography. Method and value in modern urology].

The sonographic evaluation of the prostate following rectal palpation is highly valuable and for the first time allows for a comparable documentation. The determination of prostatic size and the staging of prostate and bladder tumors can be realized endosonographically with high accuracy. The transrectal clarification of suspect palpationfindings with possibly following ultrasonically guided biopsy enables for safer diagnosis. The reaction to a therapeutic measure or the behavior in course of the carcinoma of the prostate can be observed and also well documented.