[Transperineal prostatography for the diagnosis of cancer of the prostate (author's transl)].

Prostatography by perineal puncture is a remarkable technique for examination of patients with prostatic disorders. The authors prefer transperineal puncture of the prostate for the following reasons: 1) It is carried out under the guidance of the free right index finger in the rectum; 2) Infection has never been observed; 3) Stimultaneous biopsies taken from various regions of the prostate, for histological examination, is possible on changing the position of the needle. Perineal prostatography enabled one to: 1. Precisely see the extent of a cnacer. 2. Discover lesions provoked by the tumor (necrotic zones, opacities). 3. Assert that extracapsular extension has taken place when the contrast medium has diffusep outside of the prostatic capsule. 4. Possibly establish the presence of latent carcinoma within a prostatic adenoma. These being all useful notions for treatment.