Unilateral hydronephrosis

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Unilateral hydronephrosis

Unilateral hydronephrosis occurs when a single kidney becomes distended or swollen due to a backup of urine. When both kidneys are involved, the condition is called bilateral hydronephrosis.

Hydronephrosis is a condition that occurs with a disease and is not a disease itself. Treatment and prognosis for unilateral hydronephrosis depend on the associated disorder.

Conditions that are often associated with unilateral hydronephrosis include the following:

• Acute unilateral obstructive uropathy
• Chronic unilateral obstructive uropathy
• Vesicoureteric reflux (backflow of urine from bladder to kidney)
• Nephrolithiasis (kidney stones)
• Idiopathic hydronephrosis of pregnancy

Unilateral hydronephrosis occurs in approximately 1 in 100 people.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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