A bladder diverticulum is a pouch or sac that protrudes outward from the bladder wall through a weak point in the muscle layer. These can be congenital or, more commonly in adults, acquired due to increased pressure inside the bladder from conditions like bladder outlet obstruction caused by an enlarged prostate. On ultrasound, a diverticulum appears as a round, anechoic outpouching connected to the bladder by a narrow neck. Diverticula are clinically significant because urine can pool inside them and fail to drain properly during urination, creating a breeding ground for urinary tract infections and stone formation.
Sonography Term