Chemoimmunotherapy With or Without SBRT Before Surgery for Locally Advanced Oral and Oropharyngeal Cancer

In this study, participants will be randomly assigned to either the experimental group or the control group. The experimental group will first receive SBRT (6Gy\*3 fractions) to treat the primary tumor and metastatic lymph nodes. This will be followed by a combination of Toripalimab, Docetaxel, and Cisplatin for three cycles, every three weeks. The control group will receive the same combination of Toripalimab, Docetaxel, and Cisplatin for three cycles, every three weeks, but without SBRT. After the final round of chemotherapy, all participants will have imaging scans and, three weeks later, undergo surgery. After surgery, they may also receive additional radiotherapy with or without chemotherapy. Patients can also choose whether to continue treatment with Toripalimab after surgery.