for Jean, Robin P and all those who started with DCIS with microinvasion (recognized

[TSund]

Hi all,

Could someone explain WHY DCIS has a higher HER2+ rate? When Ruth had her biopsy, it showed both DCIS and the regular stock invasive ductal carcinoma.

Does all IDC start as DCIS? why would the Her2+ rate go down once it gets to IDC (if it indeed does?)

Thanks so much,

Terri