An updated version of this post can be found HERE. Two thirds of all breast cancer tumors are known to have receptors that respond to hormones; that is they can grow in response to estrogen. [...]
Aromatase inhibitors (AIs) are the preferred hormonal therapy for postmenopausal women with estrogen sensitive breast cancer. While the selective estrogen receptor modulators (SERMs), such as tamoxifen and raloxifene, are used in premenopausal women with estrogen sensitive breast cancer, the aromatase inhibitors (e.g., anastrozole, letrozole, and exemestane) have been shown to be more effective and safer than the SERMs in postmenopausal women.Â
