The snip you posted said the extent of the lesion couldn't be determined due to dental artifacts. Metal fillings and crowns "scatter" the scan image, making it hard to see detail. That may have been what was meant.

Many people on this forum have faced similar illness and come out swinging --


53
T3N2aM0 HPV+
5/26/13 discovered painless superball-sized lymph node in neck
6/26/13 DX SCC R palatine tonsil
7/16/13 TORS tonsillectomy & selective ND, mets to 2 nodes
9/3/13 Cisplatin and rads begin, tolerated 1.5 of 3 planned chemo doses
10/16/13 Treatment ends
Dec 13 Ulcer appears at surgery site
Jan 17 Biopsy -- no cancer!
Feb 17 CT/PET Scan lights up tonsil bed & nasal cavity, docs say probably inflammation, don't panic, rescan when ulcer subsides