WHy would it have shown up on the pet scan if it was not malignan. Since cancer can spread so quickly I just want to make sure that I am not mis-diagnosed. I have never felt a sore throat since this whole thing began. The Doctor told my wife that it may have just been infected when he first examined it. You would have thought I would have felt some pain or something if it had been an infection. I am awiating the biobsy results. I am wondering however if you guys have any suggestions or advice for me