A bladder diverticulum is a tiny pouch located in the wall of your bladder. It can be present at birth or occur later in life. A bladder diverticulum that is present at birth is referred to as congenital. Non-congenital diverticulum is known as an acquired bladder diverticulum.
Congenital bladder diverticulum occurs when a small portion of the bladder lining pushes through the bladder wall. It usually only consists of one pouch and rarely needs to be treated.
However, acquired bladder diverticula consists of multiple pouches in the bladder wall. This condition is usually the result of a blockage in the urethra or prostate. Improper bladder function due to a nerve injury can also result in acquired bladder diverticula.
Acquired bladder diverticulum is most common in older men. This is because they are more prone to blockages in the urethra and prostate. Middle-aged adults can also develop acquired bladder diverticula, but it is exceedingly rare.