I am not sure of the type you have but I just had to make the same decision. I was stage 1 but because of perineural invasion I was told I needed radiation. Apparently cancer does not move cell to cell on nerve tissue but rather hops or jumps. If one cell jumped beyond the clear margin that is all it would take. I called everyone I could think of that knew anything about this and I was told by Everyone that I should have the radiation. I now fear the side effects of the radiation as much or more than the cancer. It was probably the hardest decision I have ever had to make.