I don't think I could possibly say anything after Paul's exhaustive list.
My first occurrence was just surgery, and the neck dissection to see if it might have spread in spite of the scans saying otherwise. When it came back that same year, then they wanted to hit it with all the radiation and chemo, after repeating the surgery. I think the surgery actually got it, and the radiation and stuff was just for their peace of mind more than it was for mine. But who knows. I'm here to talk about it now, which I suppose is what really counts. If it ever comes back, we'll figure out what to do at that point ... having been here for awhile, I know there are always other options to ask about, which is reassuring.