Transperineal intraprostatic injection treatment of benign prostatic enlargement.

Thirty-nine patients with benign prostatic enlargement were treated by transperineal intrasprostatic injections composed of phenol 2%, glacial acetic acid 2%, and glycerine 4%, in distilled water. A success rate of 56.41% was achieved, which is much less than that previously reported. Complications were negligible. Follow-up for two years was satisfactory. The patients in whom injection therapy failed could still be treated by any standard operative treatment. Why this mode of treatment was successful in some cases and not in others is not clear.