鼻咽部淋巴管网丰富、左右交叉,局限于一侧的原发癌可有双侧或对侧淋巴结转移。鼻咽癌颈部淋巴结转移率很高,60%~80%的患者初诊时就发现颈部淋巴结转移,其中约50%的患者有双侧颈部淋巴结转移。而临床触诊根据质地、大小、活动度等判断淋巴结有无转移有其局限性,颈深上组及颈深 Nasopharyngeal lymphatic network is rich, so cross, limited to one side of the primary cancer may have bilateral or contralateral lymph node metastasis. Nasopharyngeal carcinoma cervical lymph node metastasis rate is high, 60% to 80% of patients found at the time of first diagnosis of cervical lymph node metastasis, of which about 50% of patients have bilateral cervical lymph node metastasis. The clinical palpation according to the texture, size, activity, etc. to determine whether the transfer of lymph node metastasis has its limitations, neck depth and neck depth