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October is Breast Cancer Awareness Month and this year, the focus is on breast density. Breast density describes the proportion of the different tissues that make up a woman’s breasts. On a mammogram, the areas of breast and connective tissue seen are compared to the area(s) of fat.

Breast and connective tissue are denser than fat and this difference shows up on a mammogram High breast density means there is a greater amount of breast and connective tissue compared to fat.

Low breast density means there is a greater amount of fat compared to breast and connective tissue.

Here to talk about breast density, mammograms and other ways of imaging dense breasts as well as the new law requiring information on breast density to be sent to women is John Cunningham, M.D., Director of the Summit Medical Group Breast Care Center.