Making a decision for breast cancer - really not sure what treatment to go for. Any suggestions?

I have been diagnosed with high DCIS in my right breast and had 2 marker biopsies done. I was due for lumpectomy but they called me into the hospital as the radiologist thinks it’s a bigger area but not sure. The area could be ok or cancerous.


They gave me 2 options

1. Right mastectomy with reconstruction 

2. mammogram with dye then a few days later more biopsies 

I’m really not sure the best route to take.

has anyone been in a similar situation? Thanks