Besides hormone therapy for breast cancer, some women have hormone therapy after surgery that helps decrease the chances that the breast cancer will come back again.
One article (1) discussed hormone therapy for breast cancer. It noted that certain breast cancers have estrogen and progesterone receptors located on the surface of the cancer cells and that hormone therapy targets these hormone receptors, decreasing the growth of the cancer cells. Only those cancers that have estrogen or progesterone receptors will respond to hormone therapy for breast cancer.
The breast cancer that does not have any receptors on them will not respond to hormone therapy. One hormone therapy for estrogen receptor positive breast cancers is Tamoxifen, which blocks the growth of cancer cells that have the estrogen receptor on them.
Source: 1.Hormone therapy. http://ww5.komen.org/BreastCancer/HormoneTherapies.html. Accessed 8/26/16.
Dr. Adem Gunes
Dr. Abdullah El-Hossami