[Neoplasic perineal implantation following needle biopsy (author's transl)].

The advantages and drawbacks of the different techniques of the prostate needle biopsy are commented. The reasons for always using the percutaneous perineal approach with Vim-Silvermann's needle, modified by Franklin, in our Centre are pointed out. The results obtained in more than 1,500 biopsies performed in the Institute are briefly presented. A clinical report--the second in our records--in which the perineal implantation of a metastatic nodule occurred in the transcutaneous needle biopsy, is also presented. This complication is in fact a very rare one, and we must not forget all the advantages of this diagnostic pattern. After a thorough revision of the world casuistic, we have only been able to find 8 published cases.