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What were the main findings from the estrogen plus progestin and breast cancer analyses?

April 26, 2017Analyses breast cancer Estrogen findings main Plus progestin

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What were the main findings from the estrogen plus progestin and breast cancer analyses?

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More women who took estrogen plus progestin (E+P) developed breast cancer than women taking placebo (inactive pills). The cancer cases found in women taking E+P had similar characteristics (looked the same under the microscope), but the tumors were larger and had spread more throughout the body than those in the placebo group.