Hydroureter

**Definition:** A condition caused by obstruction, stricture, or stenosis of the ureter, which may be due to prostatic hypertrophy, carcinoma, retroperitoneal or pelvic neoplasms, calculi, or a congenital anomaly. This condition is characterised by distention of the ureter with urine.

**Exclusions:** - Dilatation of ureter - Hydroureter with infection - Congenital primary megaureter