You have to do what is right for you ask all the questions you need to be able to make an informed decision. I had a 1.3cm IDC (ended up being grade 1, 2 sentinel nodes clear) and was given the option of lumpectomy or nipple sparing mastectomy. I am small breasted so a lumpectomy would not have been a good cosmetic option and there was a danger that the margins may not be cleared. I am happy that I chose a mastectomy (with immediate implant reconstruction to match the other side). 6 weeks on I need no further treatment other than Arimidex, am healing well and have the peace of mind that another cancer will not pop up in the same breast. Yes, my new breast feels and looks a bit different but it is now part of the new me.
Sending my very best wishes to you
Jane xx