wondering how many had DCIS plus her-2+ invasive cancer

I have been wondering about the connection between DCIS and her-2+ invasive bc, since most DCIS is + for her-2. I had a large area (6cm.)of DCIS and 2 other tumors (1-2cm. and 1-1cm.)of invasive in my right breast. I will always wonder if the 2 invasive tumors were cell escapes from the DCIS since they were her-2+. How many others had DCIS present in the breast with the invasive tumor or tumors? My DCIS was the very aggresive comedo type and it was just slightly broke out of the duct in one minut spot. Could that have caused my invasive tumors to grow in other parts of the breast?