My other, 89 years , has recently been diagnosed with breast cancer. Test & scans indicated that it is small and has not spread beyond the right breast. By the way, she is right-hand. Also, at age 70, she had a lumpectomy. She is very independent as she lives alone. One sister says that with a mastectomy, there is not need for chemotherapy or radiation. Is she correct? What is the recommended treatment? can an 89 year -old have a mastectomy without any treatment? What is involved with the aftercare and rehabilitation?