Goal of Radiation Therapy for Breast Cancer

You can't see or feel radiation, but it kills cancer cells.

Radiation treatment is also called radiotherapy. It’s one way to treat breast cancer. It uses strong X-rays or another source to kill cancer cells. Radiation is a local treatment. That means it affects the cancer cells only in the treated area.

There are two ways to get radiation. One way is externally, called external beam radiation therapy (EBRT). The other way is internally, called brachytherapy. EBRT is the more common method.