Changes to This Summary (03/07/2014)
The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.
Added text about a study of screening with mammography and magnetic resonance imaging (MRI), in which 13 cancers were diagnosed among 98 asymptomatic women; four of those cancers would not have been detected without the use of MRI, and another study of multiple screening modalities observed a similar increase in cancer detection with the addition of MRI (cited Freitas et al. as reference 10 and Terenziani et al. as reference 11).
Added text about a prospective cohort study of community-based screening programs in the United States that found that annual screening compared with biennial screening mammography did not reduce the proportion of unfavorable breast cancers detected in women aged 50 to 74 years or in women aged 40 to 49 years who did not have extremely dense breasts; women aged 40 to 49 years with extremely dense breasts did have a reduction in cancers larger than 2.0 cm (cited Kerlikowske et al. as reference 21).
Added text about a prospective cohort study of community-based screening that found that a greater proportion of women undergoing annual screening had at least one false-positive screen after 10 years than did women undergoing biennial screening, regardless of breast density (cited Kerlikowske et al. as reference 4).
This summary is written and maintained by the PDQ Screening and Prevention Editorial Board, which is editorially independent of NCI. The summary reflects an independent review of the literature and does not represent a policy statement of NCI or NIH. More information about summary policies and the role of the PDQ Editorial Boards in maintaining the PDQ summaries can be found on the About This PDQ Summary and PDQ NCI's Comprehensive Cancer Database pages.