Sep 19, 2021 08:32AM - edited Sep 19, 2021 08:34AM by mountainmia
Unless you ask, it's possible neither of your doctors will talk about recurrence stats.
I don't know if you will get Oncotype run or not. I don't know what the limits are there. You can use the Predict tool to get an estimate for yourself. It doesn't actually give risk of recurrence. It gives risk of death (overall survival, with death from breast cancer or any other cause) at 5 years, 10, and 15. https://breast.predict.nhs.uk/tool
Note the tumor size is in mm, not cm. You can show the results in a variety of ways. I encourage you to try them, so you can see what's most easily understood for you.
[Edited to add, Predict talks about "surgery alone." They explain elsewhere that this means EITHER mastectomy, or lumpectomy with radiation. Those are considered to be equivalent procedures. ]
The radiation therapy is to reduce the risk of recurrence within the breast. That would be a local recurrence. A NEW occurrence would be a new cancer, not related to this one. Talk to your doctors about this. However, you should probably assume that your risk of a new cancer is at least as high as your pre-diagnosis risk of a cancer would have been assumed to be. Unfortunately, we don't have "one and done" in breast cancer world.
Glad to hear your surgery went well.