Jimbo,
Did the RT burn off your left tonsil?

Do you know why your tonsils were not removed before RT?

For an unknown primary, a (very wide) tonsillectomy is normally done before RT (NCCN practice guidelines does list exceptions if the involved lymph nodes are at very low levels - but I was told this is very rare).

Don
TXN2bM0 Stage IVa SCC-Occult Primary
FNA 6/6/08-SCC in node<2cm
PET/CT 6/19/08-SCC in 2nd node<1cm
HiRes CT 6/21/08
Exploratory,Tonsillectomy(benign),Right SND 6/23/08
PEG 7/3/08-11/6/08
35 TomoTherapy 7/16/08-9/04/08 No Chemo
Clear PET/CT 11/15/08, 5/15/09, 5/28/10, 7/8/11