I am 70 and just finished my 15th and final day of radiation at UCSD yesterday. I had a lumpectomy for DCIS with a nuclear grade of 3. My tumor was also over my heart and the breathing technique was used. Other than a rash, I have no issues and I am grateful for all the advanced technology that was available to treat the cancer. I will meet again with the oncologist in 2 months to (once again) discuss taking an estrogen blocker. The jury is still out on that one!