Arimidex, which is anastrozole - is prescribed for women in the post-menopausal period of widespread breast cancer. As exception can be patients with estrogen negative cancer if only earlier they didn't have a positive clinical answer on tamoxifen. For adjuvant therapy at the patients in the post-menopausal period having the positive indicators of receptor of hormone, an invasive estrogenpositive breast cancer at early stages. For adjuvant therapy at patients in a post-menopausal period who had adjuvant treatment by tamoxifen within 2-3 years, estrogen of a positive breast cancer at early stages.