Do Women really know what this means when diagnosed with breast cancer?
Hormone Receptor-Positive Breast Cancer:
About 80% of all breast cancers are “ER-positive.” That means the cancer cells grow in response to the hormone estrogen. About 65% of these are also “PR-positive.” They grow in response to another hormone, progesterone.
If your breast cancer has a significant number of receptors for either estrogen or progesterone, it’s considered hormone-receptor positive.
Tumors that are ER/PR-positive are much more likely to respond to hormone therapy than tumors that are ER/PR-negative.
You may have hormone therapy after surgery, chemotherapy, and radiation are finished. These treatments can help prevent a return of the disease by blocking the effects of estrogen. They do this in one of several ways.