Anastrozole better than tamoxifen at preventing breast cancer recurrence.

Anastrozole better than tamoxifen at preventing breast cancer recurrence.

After ten years of follow-up, a study comparing anastrozole (an aromatase inhibitor) with tamoxifen (an estrogen antagonist) has shown that anastrozole is better at preventing breast cancer recurrence in post-menopausal women with estrogen receptor positive cancer.