Abstract
There is increasing evidence that endocrine therapy has an important role in patients with oestrogen receptor positive breast cancer. Several large meta-analyses have reinforced the value of both ovarian ablation and tamoxifen in improving survival. Over the past decade, aromatase inhibitors have become the treatment of choice for second-line therapy of metastatic breast cancer, and the third generation inhibitors have now an established reputation for good patient tolerability. Early studies indicated that aminoglutethimide/hydrocortisone could benefit postmenopausal patients with primary breast cancer, and in 2001, the ATAC study showed that the third generation aromatase inhibitor, anastrozole, seemed superior to tamoxifen in that anastrozole-treated patients had a longer disease-free survival. Other studies will report on the relative merits of the steroidal inhibitor exemestane as well as non-steroidal letrozole. The exact duration and sequencing of treatment, together with the long-term effects on bone are at present, unknown.
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