4 cycle chemotherapy
is incomplete treatment of cancer of buccal mucosa. this is called as neoadjuvant chemotherapy. i suggest to meet any onco-surgeon/surgical oncologist
to show him for feasiblity of surgery(COMMANDO) , Once you gone through surgery ,you require adjuvant radiotherapy(radiation
) as per surgical pathology report. so my advise to you is first meet cancer surgeon.
see u. how your relative get well soon.