Each year in the United States, more than 52,000 men and 18,000 women are diagnosed with bladder cancer. Most are over 70 years old.
There are two kinds of bladder tumors:
- Benign tumors: These are not cancerous, and usually they are not a threat to life. They don’t invade the tissue around them and once they are treated or removed, they usually don’t grow back.
- Malignant tumors: These are cancerous growths. Although they usually can be removed, they can also grow back.
Bladder cancer cells can invade nearby organs, such as the prostate in a man or the uterus in a woman. They can also break way from a tumor and spread through blood vessels to other parts of the body, including the liver, lungs, bones and lymph nodes. When this happens, the cancer has metastasized and new tumors may form in those parts of the body.