My relative just underwent brain tumor resection in Mayo over a month ago. He was then referred to the local medical facility for radiation therapy. Initially we were told that the radiation is a standard procedure, necessary for patient in 60's with partial tumor resection. It should be done within 4-6 months after surgery, even though the tumor is low grade glioma. However the local neuro-oncologist insisted that radiation would cause permanent memory and cognition damage. For instance, the patient might not recognize his own family members if it happens, as we were told. So the postoperative treatment plan has to be changed to chemo-therapy only and then wait/see MRI update every two months. Apparently, this local opinion largely differs from Mayo's original plan. I wonder if anyone on the Connect with similar situation has experienced such severe memory and/or cognitive side effect. Any input is helpful and appreciated.