In the younger women, there is a 50 percent reduction in the recurrence rate, and in the older women it's about a 25 percent reduction in the rate of tumor recurrence.
All of these patients, younger as well as older, whether they have tumors that have estrogen receptors or tumors that do not, they all show a benefit when you add chemotherapy.
The use of tamoxifen can prevent breast cancer in patients who have no evidence of breast cancer but are at high risk of getting it.
This study proves the principle that prevention is a legitimate kind of approach to treating breast cancer, and justifies the continuing research to find [preventive] drugs with less side effects and better risk reduction.
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