title: The site of functional infravesical obstruction in children.
abstract: In an attempt to localise the site of obstruction in children suffering from functional infravesical obstruction, it was found that primary bladder neck obstruction was rare. Only one boy suffering from prune belly syndrome and three children with megacystis demonstrated primary bladder neck obstruction. All of the others had functional bladder neck obstruction as a secondary phenomenon, following either an antireflux operation or electroresection. Bladder neck hypertrophy was found to be a typical secondary alteration following any kind of reactive detrusor hyperactivity.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003556:Cystitis / Q000150:complications; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011312:Pressure; D011535:Prune Belly Syndrome / Q000150:complications; D011859:Radiography; D014521:Urethra / Q000473:pathology; D001745:Urinary Bladder Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D001748:Urinary Bladder Neck Obstruction / Q000175:diagnosis; D001750:Urinary Bladder, Neurogenic / Q000150:complications; D014563:Urodynamics