Wow.. on the graft? I would ask if maybe there was something else going on (chronic irritation of the area?)
Anyway that said. They can replace the graft (first option SHOULD be surgery with this type of cancer - unless it's
HPV related - HIGHLY UNLIKELY!) Are there nodes involved? If so (assuming you didn't have one way back) they should also be doing a neck dissection. If they find nodes involved then I would suggest - if they suggest it - a follow up with radiation.
Hugs and welcome - and this totally sucks!!!!