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Breast Cancer

Women in their 40s have lower mammographic tumor detectability

Published in Women's Health Weekly, August 12th, 2010

The reduced effectiveness of mammographic screening in women in their forties is primarily due to lower detectability instead of faster tumor growth rate, according to a study published online July 27 in The Journal of the National Cancer Institute.

Mammography screening outcomes, measured in terms of tumor size, lifetime gained and mortality, have typically been poorer in women in their forties than women in their fifties, partly because tumors of younger women tend to grow more quickly, so by the time they grow to a detectable size, they would have likely already been detected by a routine examination. Younger women also tend to have denser breast tissue, which can...

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