Head and neck tumors include neck tumors, otorhinolaryngology tumors and oral and maxillofacial tumors. The common tumors in the neck are thyroid tumors; the common tumors in otorhinolaryngology are laryngeal cancer, hypopharyngeal cancer, nasal sinus tumors, nasopharyngeal cancer, etc.; the common tumors in oral and maxillofacial area are oral cancer (such as tongue cancer, gum cancer, cheek cancer, etc.), parotid gland tumors and submandibular gland tumors, etc. Therefore, tumors in the head and neck area are the most common among all tumors in the body in terms of their primary sites and pathological types.