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@katrina123

I am perplexed. How can DCIS and IDC be part of the same tumor? DCIS is the presence of abnormal cells inside a milk duct and IDC is cancer that has moved into tissue outside of the milk ducts.

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Replies to "I am perplexed. How can DCIS and IDC be part of the same tumor? DCIS is..."

@katrina123 my DCIS , IDC and ILC were all part of the same mass. That means part of the tumor had broken out of the duct. My cancer was "heterogeneous" or mixed, which made diagnosis tricky because parts of it were even HER2+ and parts HER2-.