I had ependymoma grade 2 I had surgery on October 31st 2017 and after 2 months I had radiation therapy for 30 days and after 2months I had done MRI and the scan show no sign of tumor I wanted to ask that it can come or not if it can come then how many % chance is there of come back after after 15 radiation I was not able to eat properly is it because of radiation the radiation specialist has given some medicine when I was eating then I was was able to properly but when medicine was over I was not able to eat then I told the doctor he had given me medicine but head not benefited from it I just wanted to know is it because of radiation.