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How do they know if my breast cancer was Her-2/neu positive ?

April 26, 2017breast cancer her-2 NEU positive

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How do they know if my breast cancer was Her-2/neu positive ?

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Testing is performed on cancer cells that have been removed during breast cancer surgery. It may also be performed on cells from a breast tissue sample that has been stored from a previous biopsy. Your cancer specialists will receive a report from the lab,if the test was carried out, indicating if your tumor is positive for Her-2/neu protein overexpression. This helps the doctor decide if you would benefit from treatment with Herceptin.