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Characteristics of Breast Cancer Cases
Number of Women Diagnosed with Breast Cancer in 1996-2009 by Age and Type of Disease
This figure shows that 89,205 women were diagnosed with breast cancer in 1996-2009 who have had mammography data recorded in the BCSC. Comparison to the age distribution of mammography shows that breast cancers are diagnosed more often as age increases. Ductal carcinoma in situ may be commonly detected by screening mammography, particularly for women between ages 40 to 69.
Number of Women Diagnosed with Breast Cancer in 1996-2009 by Year of Diagnosis and Type of Disease
This figure shows the number of women diagnosed with breast cancer within the BCSC research sites each year for the years 1996-2009. However, because of the long lag time that may occur between a screening mammogram and breast cancer diagnosis, one cannot use the information on screening mammography and cancers in these figures to form rates (cancers/mammograms). Also, one research site contributes either no cancer data or incomplete cancer data for years 2006+, and another research site contributes incomplete cancer data for 2009.
Incidence rate of breast cancer per 1,000 screening mammograms
This is based on screening mammograms from women ages 50-69 years who have a prior screening exam within 30 months. Rates are standardized to year 2000 distribution of mammography registry, age at mammogram, and time since last mammogram. One registry does not contribute data after 2004 and another after 2007.
The following source must be cited when reproducing these data:
"Data collection and sharing was supported by the National Cancer Institute-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). A list of the BCSC investigators and procedures for requesting BCSC data for research purposes are provided at: http://breastscreening.cancer.gov/."
Last modified: 09 Jul 2014
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