Women with dense breasts may need annual mammograms

By Lisa Rapaport (Reuters Health) - While most older women might not need breast cancer screening with mammography more often than every three years, some women with dense breasts may need mammograms every year, U.S. research suggests. Among women aged 50 to 74, those without a high risk for breast cancer or dense breast tissue didn’t have an increase in breast cancer deaths if they went for mammography every three years instead of every two years. “Women at low risk and low breast density will experience more harms with little added benefit with annual and biennial screening compared to triennial screening, whereas women with dense breasts and high breast cancer risk may have added benefit from annual compared to biennial mammography,” lead study author Amy Trentham-Dietz of the University of Wisconsin-Madison said by email.