Effective decisions about the treatment of breast cancer require a clear understanding of treatment goals, side effects, and their impact on quality of life. The treatments include surgery, radiation, chemotherapy and hormonal therapy. Patients often want to understand goals with the use of tamoxifen as well as another type of hormonal medicine called aromatase inhibitiors. Available aromatase inhibitors include Arimidex (anastrozole), Aromasin (exemestane), and Femara (letrozole).