Neoadjuvant vs Adjuvant in Locally Advanced Recurrent NPC

Inclusion Criteria:

1. Pathologically diagnosed with recurrent nasopharyngeal carcinoma;
2. Resectable disease staging rT2 (deep parapharyngeal space, or distance to the internal carotid ≤5mm) or rT3 (excluding the lesions confined to the basal wall of sphenoid sinus), rT4, according to AJCC 8th edition;
3. Cervical lymph node metastasis can be controlled locally;
4. Aged 18 to 75 years;
5. Informed consent forms signed to participate in the trial;
6. Without distant metastasis;
7. ≥6months from the accomplishment of radical radiation to recurrence
8. previously only 1 course of radiotherapy;
9. Sufficient organ function;
10. ECOG score 0-2 and can tolerate surgery,chemotherapy and immunotherapy.

Exclusion Criteria:

1. Participate in other interventional clinical trials;
2. Uncontrolled illnesses that interfere with the therapy;
3. Suffering from another or multiple malignancy within 5 years (excluding fully treated basal cell or skin squamous cell carcinoma, cervical carcinoma in situ, etc.);
4. Any contradiction to surgery;
5. With serious autoimmune disease;
6. The patient is currently using immunosuppressive agents or systemic hormone therapy to achieve immunosuppressive effects (dosage\>10mg/day prednisone or other glucocorticoids), and continues to use them within 2 weeks before the first administration;
7. Severe allergic reactions to other monoclonal antibodies;
8. History of radioactive particle planting;
9. Vaccination with live vaccine within 4 weeks prior to initial administration or possibly during the study period;
10. Female patients who are at pregnancy or lactation;
11. Other situations that the researchers believe not suitable for enrollment