Recurrence rates for ER-/PR- DCIS with microinvasion????

If you had good surgical margins after your MX, then your risk of a localized recurrence (i.e. in the breast area) will be in the range of 1% - 2%. That is pretty consistent for anyone who's had MX, regardless of the diagnosis and pathology. Basically, most of the breast tissue has been removed, but a tiny bit always remains, and within that tiny bit of breast tissue, there is a small risk that a few cancer cells might still be lurking. And that's what makes up the 1% - 2% risk.

Because you had the microinvasion, your diagnosis is Stage I (invasive cancer) and not Stage 0 (pure DCIS) and with that difference comes a very small risk of mets. Here again, the risk is very tiny. I had an ER+/PR- microinvasion (HER2 status not tested), and was told that my risk of mets was about 1%. I would expect that your risk would be in the same range. Like you, my treatment was an MX and nothing more, and so far, after 11 years, I'm fine.

Here is one calculator you can use: http://www.lifemath.net/cancer/breastcancer/outcom... I'd suggest that where it says "display as", you click for a Pictogram. I find that's the chart that's the clearest and easiest to interpret.