Radiation therapy is a form of cancer treatment that uses high energyX-rays to kill cancer cells while minimizing damage to healthy cells. When used for breast cancer treatment , radiation is delivered to the affected breast and, in some cases, to the lymph nodes under the arm or at the collarbone. Radiation therapy is usually given after a lumpectomy and sometimes after a mastectomy to reduce the risk of local recurrence of breast cancer. The treatments generally start several weeks after surgery so the area has some time to heal. If your doctors recommend chemotherapy with radiation therapy, chemotherapy might be given before you start radiation therapy. Standard whole-breast radiation therapy treatments usually involve daily treatments that are given Monday through Friday for about six weeks.
External beam radiation uses high-powered beams of energy to kill cancer cells. Beams of radiation are precisely aimed at the cancer using a machine that moves around your body. Radiation therapy for breast cancer uses high-energy X-rays, protons or other particles to kill cancer cells.
Radiation therapy also called radiotherapy uses high-energy rays to kill cancer cells. It affects cells only in the part of the body that is treated with the radiation. Breast cancer radiation therapy may be used to destroy any remaining mutated cells that remain in the breast or armpit area after surgery. Note : There are special situations in which radiation is used for women with metastatic breast cancer experiencing painful bone metastasis. This section however focused on the use of radiation for adjuvant therapy treatment given after the main treatment to lower the chance of breast cancer returning.