Just read a bunch of posts and I have to say I was really impressed with the warmth, grace and humor.
Anyway, in the spirit of there are no stupid questions(and in the hope that I will have a clearer mind soon here's some more dazed and confused questions):

I described the "gash" that Dave has. I believe that the ENT biopsied behind that (back towards his throat although he didn't say anything about his throat he did say that his cancer(?) is in the back middle of the tongue). Dave is feeling soreness in a different spot than the "gash" so we are assuming that is where he biopsied.
I was figuring the gash was the CA(if it's there) but now I'm guessing it's just a symptom from it?
So, my question is in order to stage(because they talk about measurements) what exactly are they measuring? are there spots back there we can't see? How does that get measured?