Hi Sandra, I am not sure why the chemo % is so low for your case. Maybe it's the cell type? 80% of all diagnosed BC are hormone +ve and HER2-ve like yours. And I would say 11mm is awesome news, it's not bigger which is great you found it early. I can't offer any advice, but for my case which is hormone neg and her2 pos, 2.5cm tumour and 3 lymph nodes clear, the % i got for chemo was much much higher but I can't remember the figure now (cos I don't want to be too affected by the statistics). For me, apparently Herceptin treatment is of greatest significance, even higher than chemo. xxx