Butonlar (urethrostomy - operation overlay perineal fistula urethra. Indications: scrotal and scrotal-perineal forms of hypospadias, stricture and obliteration hanging part of the urethra over a large area, leukoplakia front of the urinary tract, cancer of the urethra and penis. The advantage butonlar before cystostomy (see the bladder) - no violation of the mechanism arbitrary urination (however, the act of urination is in sitting position). There are temporary butonlar (imposed by longitudinal incision of the urethra) and permanent butonlar (urethra cross and the Central piece of his stick into the skin).