Tamoxifen Chemoprevention Associated With Earlier Diagnosis Of ER-Negative Breast Can
 

Women at elevated risk of breast cancer who had been randomly assigned to tamoxifen treatment and then developed estrogen receptor (ER)-negative breast cancer were diagnosed earlier than women who had been randomly assigned to take a placebo and then developed ER-negative disease, according to a study published online October 7 in the Journal of the National Cancer Institute.

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