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From JAMA's Daily News Site
May 8, 2013

From JAMA ’s Daily News Site

JAMA. 2013;309(18):1884. doi:10.1001/jama.2013.4959

Women aged 50 to 74 years at high risk for breast cancer who undergo screening mammography every other year appear no more likely to be diagnosed with advanced-stage breast cancer than comparable women who are screened annually, according to recent research.

The study showed that older women with high breast density or a history of hormone therapy after menopause also have a lower risk of false-positive results, so they're less likely to undergo unnecessary tests. In women aged 40 to 49 years with extremely dense breasts, annual mammography may minimize the risk of being diagnosed with advanced-stage disease but apparently increases the likelihood of false-positive results.