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Radiation therapy is the use of radiation to treat diseases. It is typically used to treat of cancer. It may use a radioactive material or particle accelerator or other source of ionizing radiation that can kill or damage cancerous cells.
Radiation therapy may help cure several different types of cancer if they are limited to one area of the body. Doctors also use it to prevent tumor recurrence after surgery to remove a primary malignant tumor (for example, early stages of breast cancer). Radiation therapy works together with chemotherapy. Radiation therapy has been used before, during, and after chemotherapy in cancers known to be affected by radiation.
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