Abstract 5892: Factors associated with longitudinal changes in mammographic density in a multiethnic breast screening cohort of postmenopausal women (original) (raw)

Cancer Research

Abstract

Mammographic density is an important risk factor for breast cancer and is known to differ in women by characteristics such as age and race/ethnicity. Women who experience longitudinal decreases in breast density have a reduced risk of breast cancer; however, besides age, which correlates with decreases in breast density, it is unclear what other factors contribute to changes in breast density over time. Understanding factors associated with density changes may enable a better understanding of breast cancer risk and potential strategies for prevention. This study investigated factors associated with changes in mammographic density in a cohort of 3,392 postmenopausal women (mean age=61.3±8.8 years) with no history of breast cancer who had at least two mammograms spaced at least three months apart at a University of California, Irvine Health breast imaging facility between 2011-2017. Self-reported information on demographics, breast and reproductive history, and lifestyle factors, incl...

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