Fig. 4

Staging TPIT operation a preoperation appearance. b Rectangular flap was harvested from the inner prepuce and the mobilized foreskin was rolled into a tube over a catheter; c The glans channel was created; d The proximal end of the new urethra was anastomosed with the posterior wall of the external urethra, using the anterior wall to form fistula; e Preoperation appearance of the second stage; f, g Urethral fistula was repaired in the second stage; h The neourethra was covered by flap