preferred_name: Stage IVB Oropharyngeal Undifferentiated Carcinoma AJCC v7
preferred_name_lc: stage ivb oropharyngeal undifferentiated carcinoma ajcc v7
label: Stage IVB Oropharyngeal Lymphoepithelioma AJCC v7
label_lc: stage ivb oropharyngeal lymphoepithelioma ajcc v7