The problem with a PET scan is that it can give you easily wrong positives especially for oral scans. The more metabolically active cells are the more they grab glucose which what you see. Inflammation and scar tissue (healing) will also show up.
The other thing about the PET is the detection limit. You need a bunch of active cells to show up, if there are just a few you will not see them regardless how active they are.

Having said this the the scan shows areas of concerns to be watched and or biopsied which will tell you what is going on.

Hope all goes well.

M

Thanks everyone for the advice. I had a very long talk yesterday with my HBO doc. He consulted with my family doc and rad. doc and all agreed that the spot isnt something I should be worried about.

They all think its probably an inflamation, possibly scar tissue. The spot is very small. For now, there is no reason for the biospy.

After going thru OC twice, I worry about anything that lights up on the scan. Maybe I worry too much, but it sure is scary to think it could be back again. So unless there are any changes, I need to just move on.