You have blood relatives (grandmothers, mother, sisters, aunts) on either your mother's or father's side of the family who had breast cancer diagnosed before age 50.
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There is both breast and ovarian cancer in your family particularly in a single individual.
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There are other cancers in your family in addition to breast, such as prostate, melanoma, pancreatic, colon, and thyroid cancers.
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You are African American and have been diagnosed with breast cancer at age 35 or younger.
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Someone in your family has tested positive for an abnormal breast cancer gene.
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Up next: 10 Important Things to Know About Mammograms
Learn more in the Genetic Testing section.
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