头颈癌是一类严重危害人类生命和健康的恶性疾病,美国国家癌症研究院(National Cancer Institute)的最新流行病资料表明,2001年,全美共75000人被诊断为头颈癌,其中甲状腺(52%)、骨(43%)、软组织(20%)、唾液腺(20%)、舌(16%)、扁桃体(12%)和鼻(12%)恶性肿瘤的发病率呈上升趋势;2 Head and neck cancer is a serious malignant disease that endangers human life and health. According to the latest epidemiological data from the National Cancer Institute, 75,000 people were diagnosed with head and neck cancer in the United States in 2001, with thyroid (52% ), Bone (43%), soft tissue (20%), salivary gland (20%), tongue (16%), tonsil (12%) and nose (12%);