Congenital polyp of the prostatic urethra.

Congenital polyp of the urethra is a rare cause of urine retention in male patients. Diagnosis is made via cystourethrography and is confirmed by transurethral biopsy. Although the recent literature contains several reports on the use of transurethral resection the preferred surgical procedure yielding the best results is transvesical excision of the polyp.