One of the symptom's of my mother's cancer was low-grade fever. When she started to have radiation treatment, her fevers became quite high. (103 to 104) She was kept in the hospital for twelve days and they repeatedly looked for signs of infection, but never found any. Some people did not seem to believe that her radiation treatments could be related to the fever, but some of her doctors said that they were. I was completely convinced; she would spike a high fever a certain amount of time after the radiation every time. Later, when her radiation treatments were finished, the fevers went away. Roz