Hello there, I am dr.milan an infectious disease specialist answering your question. For your case what i feel you is you may have infection which is acquired during hospital stay. So now you need to go for culture examination from that wound area specimen. THough antibiotic is running so might be culture comes negative, but we should go once at least. And also that specimen is need to be screen for atypical mycobacteria & fungus. Because sometimes this type of organism is found in such a case. Than if any organism is found you can go with sensitivity pattern under guidance of your surgeon. For RT and chemotherapy opinion you need to follow guidance of your surgeon, it can be advised only after reviewing all the reports including radiological findings and local examination. Hope i have given appropriate guidance to you. if you have any query you can consult me anytime. Give me star rating according to your satisfactory level. Thanking you.