Susan,
1. I would wait for the path results before I schedule a FNA or an MRI or a PET.
2. It most commonly spreads to the nodes especially with
HPV+ SCC. I was told that it next would spread to the lungs and brain but I don't remember many, maybe only a few, that have had a distant met since I've been on this site.
3. Don't know about skin cancer other than the pictures you see on the Web but this is not a cancer that anyone can Dx with any certainty. That's why we ALWAYS tell people to get a bio and wait for the results.
Finally, I had a huge gash on my tongue post Tx, almost as if the tongue split in 2 literally overnight and mine was associated with thrush and some horse pills takes care of that.