Lee, this is a hard decision, but if it was me I would go for the neck dissection. Peace of Mind plays a big part in my decisions. When I had cervical cancer they told me they would remove everything. Now that was hard to take. (no more children for sure)I went for a second opinion...and knew if I did not have it..it may be game over in 10 to 15 years. Had it and never looked back. It was a real nightmare for me..but I got through it. Hope it helps..I can only imagine what you are going through. Carol Ann.
ps. The sad thing is..the scans, the doctors who really knows.

Carol CG to Husband age 60 Stage IV SCC right tonsil T4AN2B tx rad x 35 chemo x 2 Currently after treatment no sign of cancer in throat. (all clear to date)