Recurring cancers in women with a history of breast cancer differ from the original tumors

When women with a history of breast cancer learn they have breast cancer again, one of the first questions they and their doctors ask is: Has my cancer come back, or is this a new case? Now, new data from Fox Chase Cancer Center suggest that both new and recurring cancers will differ significantly from the original tumors, regardless of how many months or years women spent cancer-free, and doctors should tailor treatment to the specific qualities of the second tumor, regardless of whether it's old or new.

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