Objective    To summary and evaluate a new operation approach

diameter-matched and increasing internal urethrotomy

in the treatment of the complicated anterior urethral stricture after benign prostate hyperplasia surgery.     Methods    From January 2004 to July 2007

39 patients with diagnosed complicated anterior urethral stricture (urethral circumference under 12F) after benign prostate hyperplasia surgery underwent diameter-matched internal urethrotomy in our department. First

the worst stricture segment of urethra was inc

ised by a little resectoscope

and the moderate stricture segments and 2 lateral subnormal segments of urethrea were incised by a middle resectoscope for urethrotomy. Urethral sounding and some medicine were given to prevent the urethral scar formation.     Results    Among the 39 patients

35 patients were cured (89.7%) after operation

and 20-24F urethral sounds could pass through their urethra with a mean Qmax of 23.4ml/s. The urethral strictures of 3 patients was improved

and only 16-18F urethral sounds passed through their urethra and the Q

max

were 11.2 ml/s

11.9 ml/s and 14.8 ml/s repectively. The total effective rate was 97.2%. The left one patient failed to resume voluntary micturition despite 3 operations.     Conclusion    Diameter-matched internal urethrotomy is a satisfactory method for the treatment of complicated anterior urethral stricture after benign prostate hyperplasia surgery.