Hello everyone. I'm new here and recently diagnosed with DCIS E & P+. I had a lumpectomy 2 weeks ago and the pathology came back with a 5mm area of invasive DC, Her2 negative. I'm scheduled for another surgery to remove more tissue, as the margin was not wide enough, along with a sentinel node biopsy. If the node comes back negative for pathology and I have sufficient clear margin they will begin radiation treatment along with AI or Tamoxifen. I've had a hysterectomy, so won't have the uterine issues, but I'm wondering if someone out there can tell me about the other side effects associated with either AI's or Tamoxifen.