Bilateral hydronephrosis : Overview, Causes, & Risk Factors

Alternate Names : Hydronephrosis – bilateral

Definition

Bilateral hydronephrosis is the enlargement (distention) of the urine collecting structures and pelvis of both kidneys. Bilateral means both sides.

See also: Unilateral hydronephrosis

Overview, Causes, & Risk Factors

Bilateral hydronephrosis occurs when urine is unable to drain from the kidney down the ureters into the bladder. Hydronephrosis is not itself a disease, but rather a physical result of whatever disease is keeping urine from draining out of the kidneys, ureters, and bladder.

Disorders associated with bilateral hydronephrosis include:

  • Acute bilateral obstructive uropathy
  • Bladder outlet obstruction
  • Chronic bilateral obstructive uropathy
  • Neurogenic bladder
  • Posterior ureteral valves
  • Prune belly syndrome
  • Uteropelvic junction obstruction
  • Vesicoureteric reflux

Pictures & Images

Female urinary tract

The female and male urinary tracts are relatively the same except for the length of the urethra.

Male urinary tract

Male urinary tract

The male and female urinary tracts are relatively the same except for the length of the urethra.


Review Date : 3/22/2010
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.

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