Effect of ERT and HRT on Mammographic Breast Density

Abstract

The American Cancer Society has reported that mammographic high density corresponding to breast cancer is RR>4.0. There are some reports that hormone replacement therapy (HRT) influences MMG density, but many of those studies used Wolfe's classification. We used a same condition MMG as pre-HRT. We examined changes in MMG density before and after hormone therapy (HT), and found that MMG density was higher in women receiving HT than in those receiving no treatment.