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Development of breast cancer in a person substantially increases the risk of development of second primary breast cancer. This risk may be as high as In some studies this risk to be about 1 percent per year from the time of the first breast cancer diagnosis. If the woman
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happens to have the BRCA1 or BRCA2 mutation then the risk is increased to 5 percent per year. Patients who had some other types of also cancers like, ovarian cancer, endometrial cancer and colon cancer may also have increased risk of breast cancer.
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