Hello everyone, my mother diagnosed with breast cancer and had her partial mastectomy, her lump node found clear no metastatic.she is healthy and no other health issues . Doctor said no chemo required but advised for radiation. I was wondering if the cancer is removed does she really need to go through the radiation? I heard a lot of side effects of radiation. Wondering if we could avoid this and only continue with tamoxifen? Any experience opinion to share with me please?