吞咽困难是鼻咽癌患者在放疗后存活期危及生命的后发反应，约占１／４。本研究采用纤维内窥镜吞咽测试法．在３１例有吞咽困难的鼻咽癌患者中，检测其结构与功能变化６３１例患者经成功放疗后均排除了肿瘤复发或转移的可能。其中男性１６例，女性１５例，年龄为３３～７８岁， Dysphagia is a life-threatening post-radiotherapy response to nasopharyngeal cancer patients, accounting for about 1/4. This study used fiber endoscopy swallowing test. In 31 cases of nasopharyngeal carcinoma patients with dysphagia, changes in their structure and function were examined. 631 patients were excluded from the tumor recurrence or metastasis after successful radiotherapy. Including 16 males and 15 females, aged 33 to 78 years old,