Hi there,
Mine was 2.7cm with a positive lymph node. I had a lumpectomy/chemo/rads but unfortunately had a recurrence 18 months later. My margin was very smaill though, which I questioned at the time. Second time around had a 3cm tumour and had a mastectomy and more chemo.
I don't mean to scare you as every cancer is different and I feel if I'd had a mastectomy or a bigger margin then maybe the recurrence would not have happened. Hindsight can be a wonderful thing. I would certainly be asking your medical team the questions that are concerning you.
Paula xxx