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Ureteropelvic Junction (UPJ) Obstruction

A blockage occurring where the kidney’s urine collection system meets the ureter, the tube that carries urine to the bladder.

Urethral Prolapse

A condition in young girls wherein the end of the urethra protrudes outward from the urinary opening.

Urinary Biofeedback

Urinary Biofeedback is a technique Lurie Children's uses to teach children to identify and control the proper muscles when urinating.

Urinary Frequency & Urgency

Also called overactive bladder, frequency of urination more than the usual seven times per day, and difficulty in delaying using the toilet.

Urinary Tract Infections

UTIs in children are infections of the urinary system and may involve just the bladder, or the bladder and the kidneys. Learn more about symptoms and treatment.


In the Urodynamics Program, experts from Lurie Children's Division of Urology provide studies to evaluate bladder function.

Urogenital Sinus

A rare abnormality in the development of bladder, urethra, and vagina during fetal growth, causing the urethra and vagina to continue to share the same channel.


Lurie Children’s Division of Urology is the largest pediatric urology department in the region with more than 17,000 pediatric visits each year. Learn more.


Uveitis is inflammation inside of the eye. Learn more.

Vaginal Agenesis

The incomplete development of the vagina, either shorter, nonexistent or simply a remnant of one.


An excessive widening of the vein that drains blood from a testicle, acting like a varicose vein of the scrotum.

Vascular Lesion Center

The Vascular Lesion Center (VLC) at Lurie Children’s is focused on providing comprehensive care for infants, children and adolescents with vascular lesions.