Recent evidence shows aromatase inhibitors used alone or in follow-up after two years of tamoxifen therapy demonstrates clear and, in some cases, improved reduction of recurrence risk.

近年来证据显示芳香酶抑制剂单独或在三苯氧胺使用两年后来进行治疗乳腺癌可以促进降低复发率。

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Hormone therapy includes tamoxifen and aromatase inhibitors.

激素治疗包括三苯氧胺和芳香酶抑制剂。

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Professor Coombes said switching drugs also seemed to avoid the side-effects of long-term tamoxifen therapy, such as cancer of the womb and deep vein thrombosis.

BBC: Breast cancer drug 'cuts deaths'

Dr. WEINER: Around the world there are certainly many women who have been on tamoxifen for five years, have been off all therapy for a few years, and might consider going on a drug like letrozole or specifically letrozole based on these results.

NPR: Study: Drug Can Curb Breast Cancer Recurrence

Because hormone therapy is less toxic than chemotherapy, your doctor might start with tamoxifen or an aromatase inhibitor.

CNN: Recurrent breast cancer