Breast cancer is the most frequently diagnosed cancer in women, excluding cancers of the skin. While it usually affects women, in rare cases men can also get breast cancer. According to the American Cancer Society, each year in the United States, an estimated 230,000 new cases of invasive breast cancer are expected to occur and an estimated 40,000 women will die from breast cancer. The death rate for women with breast cancer has declined recently, which is probably the result of earlier detection and improved treatment.
Source: American Cancer Society. Cancer Facts & Figures 2011. Atlanta: American Cancer Society; 2011