I wish I had answers for you. I am just beginning down this road to. However, I have yet to meet with any oncologists. I have not had a PET scan or anything like that to determine if I still have cancer. Once I have that then I will make my decision on whether to do rads and chemo. I like you have no known risk factors. I am only 31 and have never smoked and do not drink but once a year. I am also working on building my immune system and eating healthier. This has been a big wake up call for me. I wish i could be of assistance. As I have many of the same questions you do.