Question: what is the cause of bladder diverticulum?
Answer: Acquired bladder diverticula (more than 1 diverticulum) are most often caused by a block in the bladder outlet (such as from a swollen prostate or scars in the urethra), the bladder not working well because of nerve injury or, rarely, from prior bladder surgery. With acquired diverticula, many pouches often form.