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.

Breast Cancer Diagnosis ¹

Updated ductal carcinoma in situ incidence estimate ² for 2008.

Breast Cancer Screening Modalities ³

Added text ⁴ to state that most screening mammography in the United States uses screen-film technology.

Added text ⁵ to state that a large cohort of women was evaluated at 33 U.S. centers in the Digital Mammographic Imaging Screening Trial, showing no differences in mammographic sensitivity and specificity.

Added text ⁶ about an Italian trial of parallel cohorts of 14,385 women matched for age and interpreting radiologist were screened by either full-field digital or screen-film mammography (cited Del Turco et al. as reference 45).

Added text ⁷ to state that the Oslo II Study randomly assigned women to screening by digital mammography (n = 6,944) versus screen-film mammography (n = 16,985) with soft-copy double reading by experienced radiologists (cited Skaane et al. as reference 46).