Cancer is the growth of abnormal cells in the body. These extra cells grow together and form masses, called tumors. In bladder cancer, these growths happen in the bladder. The bladder is the part of your urinary tract that stores your urine until you are ready to let it out. Bladder cancer symptoms include painless blood in the urine or frequent and painful urination. Bladder cancer is highly treatable with options such as surgery, chemotherapy and radiation.