You don’t “have” to take a hormone blocker. I had surgery for DCIS, and after going over everything (the biomarkers especially)and asking a lot of questions, I decided (and my doctor agreed) that it’s a very low risk of coming back invasive, we are just going to monitor more frequently. I have osteoporosis and depression, and it’s just not right for me at this time. Good luck and ask lots of questions!