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Cystourethrograms characteristic of bladder instability in children
1Department of Urology, Nagoya University School of Medicine, Japan.
Insights
Bladder instability causes changes in the bladder and urethra during storage and voiding phases. These cystourethrogram findings, including ureteric reflux and urethral ballooning, are clinically significant.
Area of Science:
- Urology
- Radiology
- Medical Imaging
Background:
- Bladder instability is a condition characterized by involuntary bladder contractions.
- Understanding the urodynamic and morphologic changes associated with bladder instability is crucial for diagnosis and management.
Purpose of the Study:
- To illustrate and describe the characteristic cystourethrogram findings in patients with bladder instability.
- To correlate these imaging findings with functional and morphologic deformities of the vesicourethral unit.
Main Methods:
- Cystourethrograms were analyzed to identify specific patterns associated with bladder instability.
- Observations focused on changes during both the storage and voiding phases of bladder function.
Main Results:
- Repeated increases in intravesical pressure lead to characteristic deformities.
- Findings include proximal urethral ballooning, ureteric reflux, and bladder trabeculation during storage.
- Dilatation of the bladder neck and urethra, with a "pearl string" appearance, observed during voiding.
Conclusions:
- Cystourethrograms reveal distinct functional and morphologic changes indicative of bladder instability.
- These imaging observations have significant clinical implications for patient diagnosis and treatment strategies.
Abstract:
Cystourethrograms characteristic of bladder instability are illustrated. A repeated increase of intravesical pressure causes functional and morphologic deformities of vesicourethral configuration: ballooning of the proximal urethra, ureteric reflux, and trabeculated bladder during the storage phase; and dilatation of bladder neck and proximal urethra, and a pearl string-like configuration of urethra during the voiding phase. The clinical significance of these observations is presented.