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Isn't that what makes cancer so sneaky?? It is forever changing: if it was predictable then we would have a cure by now. When Linda got AC & T as her original chemo for the breast tumor (HER2+) to down-size it, it shrank like crazy but her liver mets kept growing, albeit slowly. It wasn't until she got chemo + herceptin that the liver mets responded. Does that lead us to conclude that the secondary tumor was more HER2+ than the primary? Life is never simple.
Al
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