Breast cancer is the most common type of cancer in women, according to the World Cancer Research Fund. This year, 281,550 American women and 2,650 American men will learn they have breast cancer. Another 49,290 women will learn they have noninvasive (also called in situ) breast cancer. Breast cancer can often be cured. About 83 percent of all patients with breast cancer live at least 10 years after their diagnosis.
Learn how radiation therapy is used to treat breast cancer.