Marlene.....I had a partial maxillectomy, not a mandibulectomy, but that's now why I am writing. What you are facing...and what I endured..and others in differing degrees...are all serious, and none are minor. I have at times felt a little guilty because my loss is perhaps not as great as someone else's. Please don't allow yourself to think this way. All loss is serious, and we all share many of the same problems, and emotions. I can't imagine having such confusion and still having to proceed, so that's a problem that you have that I don't.
Is there another place where you could get one more opinion?? It is likely something that can't remain in your mouth, because if it isn't cancer now, it will likely be cancer before long, from what you have said, but still I know that you would feel better if you could know for certain.
I suppose that they will know more after your surgery.
But in the meantime, don't belittle your procedure or your experience. It's a difficult experience, and you will need the support of your family and your friends, along with your NEW friends.....US!!
XO--Colleen