本文对正常鼻咽上皮,及其单纯增生或化生、异型增生或化生,以及鼻咽癌细胞的超微结构进行观察。发现从正常鼻咽上皮到癌变,细胞的异型性逐渐显著,分化程度逐渐下降。单纯增生或化生鼻咽上皮与正常者比较变化显著。提示对于异型增生或化生中癌变可能性较大者,需考虑抗癌治疗。表明对异型增生或化生根据癌变可能性的大小进行分类具有十分重要的临床意义。 In this paper, the normal nasopharyngeal epithelium, and its simple hyperplasia or metaplasia, dysplasia or metaplasia, and the ultrastructure of nasopharyngeal carcinoma cells were observed. It was found that from the normal nasopharyngeal epithelium to canceration, the atypicality of the cells was gradually significant, and the degree of differentiation gradually decreased. Simple hyperplasia or metaplasia of nasopharyngeal epithelium compared with normal changes. It is suggested that anti-cancer therapy should be considered for dysplasia or metaplastic cancers. It shows that it is very important to classify dysplasia or metaplasia according to the possibility of cancerous change.