I see several things to consider here.

1. The nature of your mother's cancer - Her's is not one of the more routine forms of oral cancer, such as a cancerous tonsil like I had (with no lymph node involvement). Mine being more routine meant, at least to me, that I might not need the #1 or #2 ranked treatment facility in the country. From your description your mother's cancer is not the more routine type. You've mentioned sinus involvement, bone involvement, etc. You are much more a candidate for a higher rated facility. That being said, I've heard a lot of good things about Dana Farber.

2. From a disruption point of view. Your mom is already going through a rough ride. A move to a far away place will be just that much more disruptive, and difficult and expensive. Finding a new place to live, moving into and setting up that new place, acquiring utilities, the list just goes on and on. Are you going to be able to do all those things for her so she doesn't have too? I promise you, she won't feel like doing it herself. Are you going to live with her 24/7 to help get her through this difficult treatment phase in a new location perhaps away from most of her friends and other family? I see a certain benefit to staying where you are, in a familiar location, near friends and other family who can help you in the caregiver role.

3. Expense - do you have concierge insurance coverage, where cost is not much of a concern? Most of us don't have it, so cost is a factor. Do you have the assets to up and move just for treatment? What will you do after treatment is over, will you stay in the new city, or move back to Boston area again, at even more expense.

If you have a good CCC, for that matter any CCC in your local area, seems to me you ought to use it, especially in light of the non-routine nature of your mother's SCC factors. Unless I've misread what you wrote, even the CCC's are recommending you stay local.

good luck with whatever you choose,

keep us informed, we are interested in your outcome,

Tony