Hellmann, Sophie Sell3; Lynge, Elsebeth3; Schwartz, Walter2; Vejborg, Ilse2; Njor, Sisse Helle3
1 Center of Epidemiology and Screening, Department of Public Health, Faculty of Health and Medical Sciences, Københavns Universitet2 unknown3 Center of Epidemiology and Screening, Department of Public Health, Faculty of Health and Medical Sciences, Københavns Universitet
a longitudinal study
Breast cancer is the leading malignant disease among western women with incidence increasing over time. High mammographic density is a well-established risk factor for breast cancer. We explored trends in mammographic density across birth cohorts to gain further insight into possible time trends in women's mammographic density that might explain the historical increase in breast cancer incidence.