Thank you for the input everyone. I have found some interesting articles regarding detection of oral cancer using various imaging types. I went back to the oral surgeon who said the earlier area/spot was not distinguishable enough to biopsy. Again, this guy has several years of H/N cancer experience. My tongue symptoms are getting worse, painful and more frequent. Went back to one of the ENT's and he did a thorough exam of my tongue and ran a scope down my nose/throat to see the base and said he didn't see anything. I understand the suggestion to biopsy, but I wouldn't know where to tell them to cut and they said without a defined area, nerve damage is a real possiblity. The one positive note is the swelling on the left (chewing) side of my tongue seems to have subsided over the past few days.