Alternate Names : Hydronephrosis – bilateral
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
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.