What are the causes of hydronephrosis?

Hydronephrosis is a common urinary system disease, the causes are a variety of, such as congenital diseases, ureteral stricture, urinary system tumors, etc.

1,

congenital diseases such as megaureter disease, bladder ureteral reflux congenital diseases may lead to ureteral obstruction, unable to discharge urine normally, resulting in hydronephrosis.

2, ureteral stricture

ureter is a conduit between the kidney and bladder, if ureter stricture occurs, will lead to kidney urine can not be discharged smoothly, resulting in hydronephrosis. And ureteral stricture may be caused by surgical injury, inflammation, stones and other reasons.

3, urinary system tumors

If the patient's urinary system tumor, due to tumor compression caused by urine can not be discharged, easy to cause hydronephrosis.