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About 2.5 million U.S. women have survived breast cancer. In most of these women, breast cancer was diagnosed after menopause (defined as 1 year after menstrual periods have stopped) — and most had breast tumors of the type that grow in response to the hormone estrogen. For women in this category, cancer specialists usually recommend that a medication called an aromatase inhibitor (AI) be taken for a few years after initial treatment. AIs lower the chance that the breast cancer will return or that a new breast cancer will develop. If you are a breast cancer survivor or know someone who is, the following information about AIs could be helpful.
Three AIs currently are available: anastrozole (Arimidex), letrozole (…