Hello David,
I'm afraid I don't know enough about any of this to give you a wordy reply of encouragement, but I can tell you there's an old fart in Michigan that's pulling for you and all my best to you. By the way, I go for my 1st PET/Scan next Tuesday. I'll let everyone know the results

58 yrs old. Stage 4 SCC base of tongue T4N2M0 no surgery chemo 7x radiation 35x completed treatments 12/20/06