Radiation for Breast Cancer | American Cancer Society
Radiation therapy to the breast can cause some side effects. Some begin during treatment. Others may occur months or even years later. Your provider may be able to suggest a hospital social worker, patient navigator, psychologist or support group to help ease anxiety related to radiation therapy or breast cancer.
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.