Mastectomy for DCIS

@JLumb after weighing up all the info from your treating team, my advice is go with your gut.  In my circumstances, I initially thought I would have a mastectomy when I first heard my lobular cancer diagnosis.  In the beginning mine started out to be a similar size to yours (mammogram, biopsy results) and I agreed to move back from mastectomy to have the less invasive approach of a lumpectomy.  After more accurate tests, the size changed considerably and I agreed to a mastectomy without reconstruction at the time.  I am glad I made my choice as the final pathology post surgery showed it was slightly larger still and I was able to keep moving forward with treatment.  I understand there are different recon options later if desired, sometimes we reach our capacity of info at a point to comprehend or we know definitively what we want to do.  My surgeon provided information at a very high level that might be required across the whole process surgery, chemo, radiation, hormone therapy etc at diagnosis - all of this is required in my case.  I am at the tail end of five months chemo, with radiation and other treatment still to come.  Totally, empathise why you might be over hospitals.  I am sorry for your losses and appreciate that your family history and experiences of friends will be in your considerations.  I wish you all the best in your decision making.