Bladder Cancer Center

Bladder Cancer

Your bladder is a hollow organ in the lower abdomen. It stores urine, the liquid waste made by the kidneys.

Your bladder is part of the urinary tract. Urine passes from each kidney into the bladder through a long tube called a ureter. Urine leaves the bladder through a shorter tube (the urethra).

The wall of the bladder has layers of tissue. The inner layer of tissue is also called the lining. As your bladder fills up with urine, the transitional cells on the surface stretch. When you empty your bladder, these cells shrink. The...