Patient : Low-grade malignant fibrosarcoma in the right cheek of the oral cavity In November 2008, I felt some pain in my mouth and thought it was a fire. CK-L(-) CK-H(-) S-100(-) SMA(-) p63(-) Will the face be deformed after surgery in this case? Doctor: The treatment of low-grade malignant fibrosarcoma is mainly based on surgery, radiotherapy is not sensitive, the first surgery is the most critical. The size of the mass described, at least 1cm outside the mass should be removed, the possibility of skin preservation is low, it is recommended to perform free flap transplantation, at present the double lobe forearm flap folding repair is more mature, is a better way. The most critical thing is the problem of postoperative recurrence, you are relatively young at the moment and must not be palliative. Patient : 1cm outside the swelling is excised, the possibility of skin preservation is low, free flap grafting is recommended This means that the face may be cut through Is the flap grafting inside the mouth or outside the face? Doctor: If the skin can be preserved, it is inside the mouth. If the excision is not extensive enough and the desire to preserve the skin is strong, local implantation of radioactive particles can be considered. However, I personally think it is better not to palliate, after all, low-grade malignant sarcoma, with low chance of early lymph node and bloodstream metastasis, has a great hope of radical cure.