@sue417
Yes. That is exactly what happened to me. Except my initial biopsy said it was only pre-cancer, Atypical Ductal Hyperplasia.
2 months later I had my first surgery it came back as extensive, grade 2 DCIS and I also has a very rare invasive metaplastic Carcinoma right next to the DCIS.
I had the sentinel node biopsy surgery 28 days later.