What Are the Causes of Hydronephrosis?
Hydronephrosis occurs when a kidney becomes distended due to compromised urine flow. Onset is quick and causes severe pain in the area between the ribs and the hips, or progresses gradually with a slight discomfort in the same area. Hydronephrosis is a condition caused by backward pressure on the kidney when the flow of urine becomes blocked, but diseases cause the obstruction to occur.