84. Urinary extravasation occurred in 2 cases.Conclusions:Ureteroscopy can increase the cure rate in the treatment of urethrostenosis or urethratresia, especially for children cases.

• 结论:在尿道狭窄或闭锁的尿道内切开治疗中，输尿管镜可增加治疗的成功率，尤其对小儿病例更是如此。