Hi Karen, I had a similar story. My sentinel node biopsy produced only one node, and it was clear. My tumour was aggressive and much larger than what they thought they were after, and one margin wasn't as good as they hoped. My surgeon said that usually they manage to get at least 3 nodes with the sentinel node biopsy, and as only one had been found he was keen to try and get more, as occasionally the cancer can skip the first node and be present in the next few. Due to my cancer being 21mm instead of the 4mm they were chasing, and also being grade 3 instead of 1 or 2, they wanted to operate again. This time I decided on a mastectomy, and had a level 1 clearance, where they managed to find 9 more nodes. They were all clear, but now I had peace of mind. I did go on to have chemotherapy due to the grade and size of the cancer, but didn't require any radiotherapy, (due to the mastectomy). I had a second mastectomy and reconstruction 9 months later an now I am well. I have just past my 4 1/2 year mark. I am on Femara. I hope you get the answers you require, and you can always ask for a second opinion if you are concerned about what they want to do.
Chris xx
