What is Bladder Cancer

Cancer is the growth of abnormal cells in the body. These extra cells grow together and form masses called tumors. In bladder cancer, these tumors form in the bladder. The bladder is where urine (liquid waste made by the kidneys) is stored in the body.

In 2017, more than 79,000 Americans will be diagnosed with bladder cancer. Men are almost 4 times more likely than women to be diagnosed. About 16,000 Americans will die of bladder cancer this year. Over time, doctors have made progress with better treatments, and more people survive.

To understand bladder cancer, it helps to know how the bladder normally works.