Bladder cancer

Skip Navigation

Bladder cancer happens when cells in your bladder grow abnormally and out of control. The cancer cells can spread to other parts of your body. The bladder is the part of your urinary tract that stores your urine until you are ready to let it out.

The cause of bladder cancer isn't known. It can often be treated successfully if it is found early.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.