I recently saw this new procedure on TV that is targeted radiation for breast cancer, called SAVI. I'll send you a link to the story so you can do some research and ask your doctor about it.
May I ask why you don't want surgery? A lumpectomy could greatly increase your chances of survival. I can understand why you wouldn't want a mastectomy, but a lumpectomy may not even be that bad, recovery-wise. If you needed any reconstruction due to the surgery, sometimes they can do it all at once with the plastic surgeon in the same operating room. Just a thought.
Anyway, check your in-box for the link. If you have any trouble linking to the story, write back and let me know. I wish you all the best.