[Errors and dangers of various valve resection technics].

Complications are frequently seen in patients with urethral valves, especially in the youngest age bracket. Some of the complications are due to valve obstruction and others due to the primary therapy. Valve resection can be transvesical, with or without symphysic incision, in direct view, via perineostomy or transurethral. These different methods represent a historical development. The mandatory prerequisite consists of the availability of update cystoscopic equipment for babies and infants. The main problems involved in "open" surgery concern incontinence. Transurethral approach can result in strictures; incontinence due to sphincter lesion can also occur. In recent years antegrade resection is being performed via percutaneous transvesical approach. It may be expected that this reduces the complications, but there is still insufficient experience to permit final assessment.