Posterior urethral valve is a congenital disease that occurs due to a disorder in the formation of the urogenital tract of the child during the fetal period. The frequency of this disease in boys ranges from 1/5000 to 1/25,000.

Urethral tumors or urethral valves are diseases that need to be detected and treated early to avoid dangerous complications of the urinary system. To treat urethral tumors or urethral valves, patients will undergo endoscopic surgery to increase effectiveness, shorten treatment time and reduce pain for patients.