Background Mammographic density and circulating sex hormones are two well-confirmed
predictors of breast cancer risk. Whether mammographic density reflects levels of …

Background: Mammographic density is one of the strongest predictors of breast cancer risk.
The mechanism by which breast density increases breast cancer risk is unclear although it …

Background Endogenous hormones and insulin-like growth factors (IGF) play a central role
in breast cancer development. Mammographic density, an important breast cancer risk …

Mammographic density is an independent risk factor for breast cancer. In postmenopausal
women, higher levels of endogenous sex steroids are associated with an increased risk of …

Background: A positive relationship has generally been observed between plasma estrogen
levels and breast cancer risk in postmenopausal women, but most of these studies have …

Background: Some types of hormone therapy increase both risk of breast cancer and
mammographic density, a risk factor for the disease, suggesting that mammographic density …

Background: Higher levels of endogenous sex steroid hormones are associated with
increased risks of breast cancer in postmenopausal women. Data for premenopausal …

Background: Levels of endogenous hormones have been associated with the risk of breast
cancer among postmenopausal women. Little research, however, has investigated the …

Objective: Hormone therapy use has been positively associated with mammographic density
in several studies. However, few studies have examined the association between …

Mammographic density and serum sex hormone levels are important risk factors for breast
cancer, but their associations with one another are unclear. We studied these phenotypes …