Hi Inali, sorry to hear about your radiation induced heart disease. I am in the early stages of getting diagnosed w/ moderate to high risk (of heart attack or stroke) coronary artery disease (and maybe more). I underwent left breast cancer lumpectomy radiation treatment over 6 years ago. And now, via getting a Coronary Calcium Scan, find out I have serious problems with my coronary arteries. In searching for info. on possible radiation induced heart disease for myself, I came not only upon Mayo but also upon "Cleveland Clinic". I found their website also has very good info on "Radiation Induced Heart Disease". I can't post links here but if you do a web search on the two terms (in one search) I put in quotation marks, it should take you to the Cleveland Clinic's Radiation Induced Heart Disease page. Very best wishes to you in your treatment. I share your concern that is a very alarming thing to have happen and am also thinking of getting my affairs in better order. I'm just now beginning this whole process. Thanks for writing and sharing so we others know we're not alone.