鼻咽癌在病因上并不十分明确，主要考虑为病毒因素（主要为EB病毒）、遗传因素和环境因素。本文报告一个家系7例发病。1先证者及家系调查情况男，36岁。因发现右上颈部肿块两天，于1996年6月8日来本院就诊。检查发现右上颈部可触及直径3．0cm的肿块，质硬，轻压痛，边缘清晰， Nasopharyngeal carcinoma in the etiology is not very clear, the main consideration for the viral factors (mainly the Epstein-Barr virus), genetic factors and environmental factors. This article reports the incidence of a family of seven cases. A proband and family survey Male, 36 years old. Because of the discovery of right upper cervical mass for two days, June 8, 1996 to our hospital. Examination found that the upper right neck can reach 3.0cm in diameter mass, hard, light tenderness, clear edges,