What are the symptoms of congenital posterior urethral fistula?

Congenital posterior urethral fistula can be diagnosed by visual examination, methylene blue test, cystoscopy and proctoscopy. The specific analysis is as follows:

1. Visual examination

. If fistula, anal atresia, etc. are observed, a preliminary diagnosis can be made.

2. Methylene blue test.

By injecting methylene blue into the urethra, observe whether there is blue fluid exudation in the perineum, rectum, etc. If there is, it indicates that congenital posterior urethral fistula may exist.

3. Cystoscopy and proctoscopy. The method of cystoscopy and proctoscopy

can directly observe whether there is fistula, size, position, etc., which is helpful for further diagnosis.