Younger patients were significantly more likely to be male and nonwhite.Younger patients were also more likely to present with head and neck primary tumors and with regional or distant metastases.

• 值得注意的是较年轻的患者更可能是非白种人男性，较年轻的患者还更可能原发肿瘤在头颈部，且局部或远端转移。