Related Experiment Video
Updated: Aug 18, 2025

Detrusor Underactivity Model in Rats by Conus Medullaris Transection
Published on: August 28, 2020
Ureterocele prolapse eliciting unusual patient behavior to control intermittent voiding
Hidenori Nishio1, Kentaro Mizuno1, Daisuke Matsumoto2
1Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Insights
Ureterocele prolapse can cause difficult urination, especially in children. Diagnosing this congenital bladder obstruction requires noticing unusual voiding behaviors.
Area of Science:
- Pediatric Urology
- Congenital Abnormalities
- Voiding Dysfunction
Background:
- Ureterocele prolapse is a rare condition that can lead to urinary obstruction.
- Congenital bladder outlet obstructions can present with subtle or atypical symptoms in children.
Observation:
- A 6-year-old boy exhibited a unique behavior of tapping his lower abdomen during interrupted urinary streams.
- This specific voiding behavior was the key indicator of an underlying condition.
Findings:
- Voiding cystourethrography confirmed ureterocele prolapse as the cause of intermittent voiding.
- Surgical intervention, specifically transvesicoscopic ureteral reimplantation with ureterocelectomy, successfully improved urinary flow.
Implications:
- Congenital bladder obstructions may be challenging to diagnose if patients develop adaptive behaviors.
- Recognizing atypical voiding habits is crucial for early diagnosis and effective management of pediatric voiding difficulties.
Abstract:
Ureterocele prolapse, an unusual but distinctive finding, may cause voiding difficulty. A 6-year-old male patient was referred to our hospital after his mother discovered that he tapped his lower abdomen when his urinary stream was interrupted during voiding. Voiding cystourethrography indicated a ureterocele prolapse causing the intermittency of voiding; therefore, transvesicoscopic ureteral reimplantation with ureterocelectomy was performed and the voiding consequently improved. However, this condition would not have been diagnosed had the unusual voiding behavior gone unnoticed. Therefore, diagnosing congenital bladder obstructions could be challenging if a patient adapts to a voiding difficulty.
Related Concept Videos
The Micturition Reflex
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating...
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Disorders of the Urinary System
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...
Imaging Studies VI: Voiding Cystourethrography and Cystography
Urodynamic Studies: Uroflowmetry
Ureters

