title: Cystourethrograms characteristic of bladder instability in children.
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.
authors.affiliation: Department of Urology, Nagoya University School of Medicine, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kondo
mesh_terms: D002648:Child; D004576:Electromyography; D005260:Female; D005471:Fluoroscopy; D006801:Humans; D008297:Male; D014521:Urethra / Q000000981:diagnostic imaging / Q000503:physiopathology; D001743:Urinary Bladder / Q000000981:diagnostic imaging / Q000503:physiopathology; D001750:Urinary Bladder, Neurogenic / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014563:Urodynamics / Q000502:physiology*