Forum Discussion
HER2 negative now HER2 positive
Hi, I have had biopsies which showed hormone positive HER2 negative cancer. I had over 6 months of neoadjuvant chemo before bilateral mastectomy surgery and the results from the surgery shows my canc...
I had an ER pos result on my core biopsy at 90%. Then after my surgery they said I was ER neg. No explanation given was satisfactory.