Successful endoscopic treatment was performed with the aid of Doppler ultrasound.

The technique is also suitable for studying the effectiveness of local endoscopic treatment.

Overall, endoscopic treatment was successful in 27 patients (96%) during the initial hospital period.

Surgery should only be considered if primary endoscopic treatment fails.

There are three specific endoscopic treatments of posterior urethral valves:

Also, endoscopic treatment has the advantage of pre-emptying the obstruction that may result from radiotherapy.

All were controlled for long periods with endoscopic treatment altough it is possible that obstruction contributed to death in one patient.

If no improvement is seen, the patient may receive endoscopic or surgical treatment.

Five were poor subjects for operation, so that endoscopic treatment by heater probe was performed.

Previous studies have not shown that the heater probe is less effective than other types of endoscopic treatment, whose efficacy is already proved.