Over the past 30 years, diagnoses of advanced breast cancer reportedly have increased among young US women, a trend not seen in older women.
The numbers remain small, but the finding raises concerns. Breast cancer in young women tends to be more aggressive and is associated with lower survival rates than breast cancer in older women. Researchers reported that in 1976, the diagnosis rate of metastatic breast cancer among women aged 25 to 39 years was 1.53 cases per 100 000 women; by 2009, the rate had climbed to 2.90 cases per 100 000, an annual increase of 2.07%.
Selections From News@JAMA and JAMA Forum. JAMA. 2013;309(15):1577. doi:10.1001/jama.2013.3614
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