16. 두경부암(Head and Neck Cancer) ▶ Head and neck cancer 범주(NCCN) ∙ Paranasal Tumor (Ethmoid Sinus Tumors / Maxillary Sinus Tumors) ∙ Salivary Gland Tumors ∙ Cancer of the Lip ∙Cancer of the Oral Cavity (Buccal mucosa, Floor of mouth, Anterior tongue, Alveolar ridge, Retromolar trigone, Hard palate) ∙ Cancer of the Oropharynx (Base of tongue/tonsil/Posterior pharyngeal wall/Soft palate) ∙ Cancer of..