This undated fluorescence-colored microscope image made available by the National Institutes of Health in September 2016 shows a culture of human breast cancer cells. A study discussed at the 2022 meeting of the American Society of Clinical Oncology suggests some low-risk breast cancer patients can omit radiation after lumpectomy. (Ewa Krawczyk/National Cancer Institute via AP)
After surgery, some cancer patients can safely skip radiation or chemotherapy, according to two studies exploring shorter, gentler cancer care.