Editing Bladder Diverticulae (section)

=== Congenital ===
* '''Thought to be a congenital weakness of the detrusor muscle'''
* '''Majority''' (≈90%) '''located near ureterovesical junction''', '''usually lateral and posterior to ureteral orifice''' with or without coexistent lower urinary tract abnormalities
** ≈13% have '''associated vesicoureteral reflux (VUR)'''
* '''Usually present during childhood'''
* '''Most common presentation:''' acute '''UTI''' resulting from stasis
** Less common presentations include enuresis, pyelonephritis, acute retention, and stones.
* '''May occur in the presence of normal voiding dynamics and in the absence of bladder outlet obstruction;''' '''however, up to 60% of congenital bladder diverticula may be associated with an underlying syndrome''' (Menkes syndrome, Williams syndrome, Ehlers-Danlos syndrome, and fetal alcohol syndrome), '''neuropathic voiding dysfunction, or outlet obstruction'''
** It has been suggested that chromosomal testing should be pursued in such patients; however, this testing is generally not recommended in children with a single simple lesion
* '''Typically, found in smooth-walled bladders''' '''and are not associated with significant trabeculation'''
* Importantly, unlike secondary or adult bladder diverticula, there is virtually '''no increased association with malignancy''' in congenital diverticula