Breast Cancer Screening and Diagnosis

OverviewWomen in the United States have a 12.3% estimated lifetime risk for developing breast cancer (i.e., 1 in 8 women). 1 In 2009, an estimated 194,290 cases of invasive breast cancer (192,370 women and 1919 men) and 62,280 cases of female carcinoma in situ of the breast will be diagnosed in the United States, with 40,610 deaths from invasive breast cancer predicted.2 However, mortality from breast cancer has decreased slightly, attributed partly to mammographic screening.