NetWellness is a global, community service providing quality, unbiased health information from our partner university faculty. NetWellness is commercial-free and does not accept advertising.
Monday, August 3, 2015
Effect of Hormone Therapy on Breast Lumps
Can hormone theropy (estradiol and medroxyprogesterone) cause or contribute to a lump in the breast that was not cancerous before taking the hormones?
Yes, just like changes that occur in the breasts with your menstrual cycles, estrogens that are given as a medication can cause breast swelling and cysts. All lumps that are changing should be checked by your doctor, even if they were not cancerous earlier.
Paula Silverman, MD
Associate Professor of Medicine
School of Medicine
Case Western Reserve University