The average lifetime risk of breast cancer for a woman in the United States is estimated to be 12.3%. The mortality rate from breast cancer has decreased 38% from 1989 through 2014. This decrease has been partly attributed to mammographic screening.
The components of a breast screening evaluation depend on age and on medical and family history. These can include breast awareness (patient familiarity with her breasts), clinical encounters (eg, breast cancer risk assessment and clinical breast exam), breast imaging with screening mammography, and, in selected cases, breast MRI.
Patients are stratified into average or high risk groups (those with >20% lifetime risk) based on history and risk prediction tools.