preferred_name: Stage IV Nasopharyngeal Keratinizing Squamous Cell Carcinoma AJCC v7
preferred_name_lc: stage iv nasopharyngeal keratinizing squamous cell carcinoma ajcc v7
label: Stage IV Nasopharyngeal Keratinizing Squamous Cell Carcinoma
label_lc: stage iv nasopharyngeal keratinizing squamous cell carcinoma