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Radiation therapy is the use of high-dose X-rays to treat cancer cells that may remain after surgery, especially if all of the cancer cannot be removed. Radiation therapy is often used for the treatment of cancer, such as non-Hodgkin's lymphoma (NHL), Hodgkin's lymphoma, and all types of leukemia. Radiation therapy may be used alone or in combination with other treatment options, such as chemotherapy.
For lymphoma or leukemia, radiation therapy may be given from a machine outside the body that directs radiation to the cancer (external radiation). Or it may be given inside the body (internal radiation), with radiation that is sealed inside of needles, seeds, wires, or catheters. The way radiation is given depends on the type and stage of cancer being treated.
| By: | Healthwise Staff | Last Revised: April 19, 2010 |
| Medical Review: | Anne C. Poinier, MD - Internal Medicine Douglas A. Stewart, MD - Medical Oncology | |
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