鼻咽癌Ⅰb区淋巴结转移特点及治疗指引

Transfer characteristics and therapeutic guide of level-Ⅰb lymph node in nasopharyngeal carcinoma

Because of the lymphatic drainage of the neck area level-Ⅰb of nasopharyngeal carcinoma is particular, and “skip” metastasis in the cervical lymph node is rare, the involved region of level-I b lymph node metastasis rate is low in nasopharyngeal carcinoma. In the three-dimensional radiotherapy era of precision radiotherapy, there is no consensus on whether level-Ⅰb need to be prophylactic irradiated in the clinic.