preferred_name: Stage IVB Oropharyngeal Squamous Cell Carcinoma AJCC v7
preferred_name_lc: stage ivb oropharyngeal squamous cell carcinoma ajcc v7
label: Stage IVB Oropharyngeal Squamous Cell Carcinoma AJCC v7
label_lc: stage ivb oropharyngeal squamous cell carcinoma ajcc v7