Gary posted on a ideal cycle before, but ultimately this is going to be up to your and your doctors. I had quarterly visits for the first 2 years, these were pretty much look and see, and if I had a complaint, a nose scope. At six month intervals in the first year I had an MRI and a chest CT. Starting in year three the scans bercame annual and I had my first PET. I recently had another PET at year 5 at my own request, doctors didn't think it necessary. I can tell you at the begining when things when bump in the night, I was back in the office to check out what it was... they were always small benign irritations in my mouth or throat. But in my book better early detection and safe, rather than sorry. My docs knew about how things had been missed for me in the first go around and were accepting of my paranoid requests. But as I told them, just because you are paranoid, it doesn't mean they aren't really out to get you!!!!