Obstructive uropathy is a condition in which the flow of urine is blocked, causing it to back up and injure one or both kidneys.

Uropathy - obstructive

Obstructive uropathy occurs when urine cannot drain through a ureter (a tube that carries urine from the kidneys to the bladder). Urine backs up into the kidney and causes it to become swollen (hydronephrosis).

Obstructive uropathy is grouped according to whether it affects one or both kidneys and whether it occurs suddenly or is long-term:

• Chronic unilateral obstructive uropathy - Long-term uropathy that affects one kidney
• Chronic bilateral obstructive uropathy - Long-term uropathy that affects both kidneys
• Acute unilateral obstructive uropathy - Sudden uropathy that affects one kidney
• Acute bilateral obstructive uropathy - Sudden uropathy that affects both kidneys

Common causes of obstructive uropathy include the following:

• Urinary tract stones
  • Ureteral stones
  • Bladder stones
• Urinary tract tumors
• Retroperitoneal fibrosis
• Benign prostatic hyperplasia (enlarged prostate)
• Tumors of nearby organs
• Bladder or ureteral cancer
• Colon cancer
• Cervical cancer
• Uterine cancer
• Any cancer that spreads
• Idiopathic hydronephrosis of pregnancy

Images

Female urinary tract

Bladder catheterization, male

Bladder catheterization, female

Male urinary tract

Review Date: 03/22/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Scott Miller, MD, Urologist in private practice in Atlanta, Georgia. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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