最常见的鼻咽恶性肿瘤是WHOIII型鼻咽癌，这种未分化鼻咽癌通常向粘膜下层浸润，因此临床检查鼻咽部粘膜面往往呈正常表现，鼻咽部活检若深度不够亦不能得到病理证实，病人可仅以颈部肿块或分泌性中耳炎为主要表现。采用原位杂交检测EBV指纹图谱方法对2例原发灶不明的颈淋巴结 The most common nasopharyngeal malignancy is WHOIII type of nasopharyngeal carcinoma, this undifferentiated nasopharyngeal carcinoma is usually infiltrating into the submucosa, the clinical examination of nasopharyngeal mucosal surface often showed normal performance, nasopharyngeal biopsy can not be obtained if the depth is not enough Pathology confirmed that patients can only neck mass or otitis media is the main performance. In situ hybridization detection of EBV fingerprinting method for 2 cases of unknown primary cervical lymph nodes