im three years out from cancer in my nasal cavity which spread to my upper palate. I have an obturator now to fill the hole left by surgery. Just lately iv been coasting along and kind of not thinking about reoccurrence and then last week my dentist sees a small ulcer which is still there today and says I have to go and get it checked out by my oral surgeon. have any of you guys had ulcers etc that have not been the cancer returned? im worried about having to do it all again or wether they can just remove the ulcer and not have to have all the other treatment again?i keep thinking oh it might be my plate rubbing or something else but it always comes back to the same thing has it come back?