A risk factor is anything that may increase your chance of having a disease. Learn about risk factors for Ewing sarcoma.

Ewing Sarcoma is a type of cancer that tends to start in the bone. Learn more.

Being told you have melanoma can be scary, and you may have many questions. But you have people on your care team to help you.

During surgery, your doctor removes a tumor or tumors from your body. Most of the time, your doctor tries to take out all the cancer and some of the normal tissue around it.

Chemotherapy can shrink tumors. It can also help ease symptoms the cancer is causing. It may even make some tumors go away.

Radiation may be used to treat the symptoms of cancer of unknown primary (CUP). Sometimes radiation may also be used to cure the cancer if it hasn't spread too far.

You may get just one type of treatment or a combination of treatments. Treatment may include chemotherapy, radiation therapy, hormone therapy, or surgery.

Most cancers are staged with the Roman numerals I, II, III, and IV. The stage of cancer of the unknown primary is at least a stage II.

If you have cancer of unknown primary (CUP), your symptoms depend on where in your body the cancer forms.

Because doctors don't know the why, how, or where of cancer of unknown primary origin (CUP), it's hard to identify risk factors for it.