Adjuvant treatment of postmenopausal women w/ hormone receptor +ve invasive early breast cancer. Extended adjuvant treatment of hormone-dependent invasive breast cancer in postmenopausal women who have received prior standard adjuvant tamoxifen therapy for 5 yr. Neo-adjuvant treatment of postmenopausal women w/ hormone receptor +ve, HER-2 -ve breast cancer. 1st line treatment in postmenopausal women w/ hormone-dependent advanced breast cancer. Advanced breast cancer after relapse or disease progression, in women w/ natural or artificially induced postmenopausal endocrine status who have previously been treated w/ anti-oestrogens. Neo-adjuvant treatment of post-menopausal women w/ hormone receptor -ve HER-2 breast cancer where chemotherapy is not suitable & immediate surgery is not indicated.