We didn't get everything the first time, which is why I had the 2nd surgery. That surgery allowed me to avoid radiation. My oncotype showed that chemotherapy would have less than 1% benefit, so I was also fortunate enough to skip that. I'm now in maintenance, and on an injection and an oral AI to drop my estrogen levels, because my cancer was hormone positive.
This has put me into menopause years earlier than I was anticipating. I'm still adjusting to the meds, and my new normal.