The bladder is a hollow, balloon-like organ in the lower belly made up of many layers of cells. It has an outer layer of muscle cells, and an inner lining layer of other kinds of cells. Bladder cancer can affect any one or all of these cells. 

The earlier bladder cancer is found, the easier it is to treat. Early symptoms may include:

• Blood in your urine. Blood is often the first sign of bladder cancer. The color of urine may be pink or deep red, depending on the amount of blood. There may also be clots of blood in the urine.
• Change in urinary habits. Urinating more often than normal or having burning, discomfort or pain when urinating, the urgent need to urinate, trouble urinating and a weak stream of urine.

Bladder cancer most commonly affects older adults but can occur at any age. Many of these symptoms could be caused by other health problems. So, it's important to see your health care provider if you have these symptoms in order to provide an accurate diagnosis.