Hi @Alola
Mine was somewhat similar to you, I had ductal carcinoma grade 2, stage 2b, 40 mm IDC, ER3+ 95%, PR2+95%, Her2-, Ki 67 5%. along with various dcis . one node only affected. So My Ki67 was a bit lower than yours hence, for you the extra test will help. Like you I was a bit nervous Not to be given chemo as that's what we've all heard about for cancer treatment, but one of my team explained the ki67 indicator has only been around 5 or 6 years and shows whether or not you will respond to chemo as a treatment. in some cases you hormone therapy is enough.
As primek said, IF chemo was deemed beneficial your team would encourage you. remember treatments, both chemo and non chemo treatments have come a long way.
Like Socoda, at this stage I feel very lucky I didn't have to have chemo. I can only imagine that 5 years ago I would have been given chemo for mine, but and am very glad for a test that could tell me in advance that it wasn't going to be beneficial for my type of cancer.
your test results and your team will guide you to the best outcome.
Aine