Women whose mammograms reveal denser breasts have a greater risk of developing breast cancer, as well as more aggressive tumors compared to those whose breasts are less dense, researchers from the Harvard Medical School and Brigham and Women's Hospital, Boston, reported in the Journal of the National Cancer Institute. Mammographic breast density gives an indication of the proportions of connective tissue, epithelial tissue and fat in the breast. It is a known risk factor for breast cancer, the authors explained...
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