This is a decision you definitely need to have a serious talk with your physician about. It is tough because no one has that magic chrystal ball that will give you the answer. I am probably the last one to give you any advice since I had my Mastectomy 56 years ago (I was 36 years old). There was no Chemo, and Radiation was given only for Positive lymph involvement. The decision was not mine, but my Doctor who opted for a Radical Mastectomy, even though my lymph nodes were negative (14 removed). This may have been overkill, but how can you fault success? I am alive at 92. At the time of my surgery, my surgeon put his arm around my husbands shoulders and said "I have done all I can, all we can do is wait and see". If your physicain has this kind of empthy, you are in good hands.