Bladder Diverticulum
2026 Jan
Abstract
Bladder diverticula are protrusions of the bladder urothelium and mucosa via muscle fibers of the bladder wall, the muscularis propria, which results in a thin-walled structure connected to the bladder lumen and poorly empties during micturition. Bladder diverticula occur either to congenital or acquired causes. They affect both adults and children. Unlike the acquired adult form, in which outlet obstruction or neurogenic dysfunction is virtually usually present, congenital bladder diverticula arise from hypoplasia of the muscular layer of the bladder wall.  They tend to be more prevalent in adults and affect males more than females. In the majority of the cases, they have positioned superolateral to the ureteral orifice close to the ureterovesical junction. Bladder diverticula usually display as incidental anomalies on imaging following evaluation of hematuria, lower urinary tract symptoms (LUTS), or infection. Teaching Point: A submucosal bladder wall lesion with high signal on T2-weighted MRI warrants blood and urine analysis to rule out a paraganglioma.
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