Sinonasal Cancer

The aim of this research study is to evaluate the effectiveness and safety of a combination of immunotherapy, using a drug called toripalimab, with chemotherapy drugs, Carboplatin and Docetaxel, as a possible treatment before surgery for sinonasal cancers. The names of the study drugs used in this research study are: * Toripalimab (a type of monoclonal antibody) * Carboplatin (a type of antineoplastic agent) * Docetaxel (a type of antineoplastic agent) * Cisplatin (a type of antineoplastic agent)