What is a bladder diverticulum?
Bladder diverticula most often occur in men with bladder outlet obstruction. The diverticula are mucosal protrusions through the hypertrophied and thickened bladder wall. As diverticula have no muscle in their wall, they often empty poorly and may develop stones or tumors as a result. A congenital diverticulum called a “Hutch” diverticulum may be seen in the distal ureter near its insertion into the bladder and may cause ureteral compression or distort the ureterovesical junction (UVJ) enough to cause reflux.