Prostate cancer is cancer that begins in the cells of the prostate gland, which is a walnut-shaped gland located below a man’s bladder. It is the third leading cause of cancer death in American men, behind lung cancer and colorectal cancer. While it can be a serious disease, most men diagnosed with prostate cancer do not die from it. Treatment can be successful when caught early, and some men don’t require treatment.
There is only one main type of prostate cancer: adenocarcinoma. Other types, such as sarcomas and small cell and transitional cell carcinomas, are very rare. A condition known as prostatic intraepithelial neoplasia (PIN) may turn into cancer, but this connection isn’t proven.