@frogjumper—I, too, am going back and forth about radiation. My diagnosis was low grade, stage 0 DCIS. I had a lumpectomy on 4/4; the lesion was 7mm, with 6mm clear margins all around and hormone positive.

On the advice of my medical oncologist, I am not doing the hormone blocker. The Sloan Kettering nomogram for my circumstances says 6% recurrence in 5 years and 9% in 10 years without radiation; reduced to 2% and 4% with radiation. I have a CAT scan on Friday to determine if I am a candidate for localized radiation vs whole breast. Radiation oncologist says my situation is “special” due to small size and large margins and I may be able to have a much abbreviated course. However, the lesion was over my heart. Proton therapy is not available here, nor is brachytherapy, but I was also told about the breath holding to help avoid the heart.

This is a difficult decision and it seems like I’m changing my mind daily. What makes it more difficult is that there is no clear or right answer. My PCP says the right path for me will become apparent and to go with my gut! Best wishes to you, @frogjumper.