RESEARCH: Women with dense breasts are at higher risk for breast cancer
Rulla M. Tamimi, Sc.D., at Harvard Medical School and Brigham and Women's Hospital, Boston, and colleagues, compared breast density in 1,042 postmenopausal women with breast cancer and 1,794 matched control subjects (women who were similar in terms of age, postmenopausal hormone use, and other factors, but did not have breast cancer).
The authors conclude that higher mammographic density is associated with more aggressive tumor characteristics and also with DCIS. "Our results suggest that breast density influences the risk of breast cancer subtypes by potentially different mechanisms," they write. "Given that the magnitude of the association with breast density is strong across all breast cancer subtypes and particularly for ER-negative disease, breast density should be included in risk prediction models across tumor subtypes,"
For more on the research: Dense Breasts: A Risk Factor