[Comparison of the efficacy of carelizumab combined with chemotherapy and chemotherapy alone in the induction therapy of locally advanced hypopharyngeal carcinoma].

To compare the efficacy and safety of carrelizumab combined with the modified TPF regimen (docetaxel, cisplatinand capecitabine) and TPF regimen alone in larynx preservation strategy for locally advanced resectable hypopharyngeal squamous cell carcinoma.