Hi there everyone here has given good advice - I am not sure what an ultrasound would tell you -as far as I know that's no ta diagnostic tool they use for oral cancer - I can tell you there's a lesion (which you already know) MRIs are used after a confirmed cancer to look for possible mets, Same with cts and pets - however they also highlight healing, inflammation, infection etc.. Only a biopsy will tell you for sure - have it done even if you have travel.... good luck!