American Journal of Roentgenology, Vol 172, 147-150, Copyright © 1999 by American Roentgen Ray Society
Mammographic changes after hormone replacement therapy in patients who have undergone breast irradiation
FR Margolin, SR Denny, CA Gelfand and RP Jacobs
Breast Health Center, California Pacific Medical Center, San Francisco 94118, USA.
OBJECTIVE: We examined three patients who began hormone replacement therapy
after lumpectomy and breast irradiation. In these women increased tissue
density appeared on mammography only or disproportionately in the
nonirradiated breast. To our knowledge, this observation has not been
reported. CONCLUSION: Breast irradiation may induce tissue changes that
prevent or diminish the proliferative response that can be induced in
breast tissue by postmenopausal hormone replacement therapy. Because this
treatment is now recommended for some women after breast conservation
therapy, mammographers may recognize this finding with increasing
frequency.