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鼻咽癌是指原发于鼻咽腔上皮组织的恶性肿瘤。是我国常见恶性肿瘤之一,全世界80%的鼻咽癌发生在我国华南地区的广东、广西、福建、湖南、江西等省。高危人群中的发病年龄多在30岁以上,高峰年龄在40～60岁,并具有明显的性别差异,男女性别比达2.5:1。鼻咽癌具有明显的放射敏感性,能够通过放射治疗取得明显疗效,大部分原发及部分复发病例(特别是组织学分类为Ⅱ和Ⅲ两个亚型)预期可被治愈,其5年生存率可达到65%～90%。局部复发与远处转移是主要死亡原因。
Nasopharyngeal carcinoma is a malignant tumor of the primary nasopharyngeal epithelial tissue. It is one of the common malignant tumors in our country. 80% of nasopharyngeal cancers in the world occur in Guangdong, Guangxi, Fujian, Hunan and Jiangxi provinces in South China. The incidence of the high-risk population in more than 30 years of age, peak age at 40 to 60 years old, and have significant gender differences, male to female ratio of 2.5: 1. Nasopharyngeal carcinoma has obvious radiosensitivity and can achieve significant therapeutic effects through radiation therapy. Most of the primary and partial recurrent cases (especially histological classification of Ⅱ and Ⅲ subtypes) are expected to be cured, and their 5-year survival The rate can reach 65% ~ 90%. Local recurrence and distant metastasis are the major causes of death.