目的了解鼻咽癌放疗后咽鼓管咽口形态和功能的改变。方法对30例(48耳)鼻咽癌放疗后有咽鼓管功能障碍的患者进行纤维鼻咽喉镜检查,鼓室导抗图法检查。结果咽鼓管咽口完全阻塞7例(12耳),咽鼓管咽口不完全阻塞20例(32耳),咽鼓管咽口异常开放3例(4耳)。前两者症状相似,后者症状轻微。结论鼻咽癌放疗后咽鼓管咽口形态和功能可发生不同的改变,对耳功能产生损害,对其了解可以对鼻咽癌放疗后的治疗提供帮助。 Objective To understand the changes of eustachian tube pharyngeal orifice morphology and function after radiotherapy of nasopharyngeal carcinoma. Methods Thirty patients (48 ears) with nasopharyngeal carcinoma who had eustachian tube dysfunction after radiotherapy were examined with nasal laryngoscope and tympanogram. Results Eustachian tube pharyngeal port obstruction completely blocked in 7 cases (12 ears), eustachian tube pharyngeal port incomplete obstruction in 20 cases (32 ears), eustachian tube pharyngeal orifice abnormal open in 3 cases (4 ears). The first two symptoms are similar, the latter symptoms are mild. Conclusion The morphology and function of pharyngeal orifice of eustachian tube after radiotherapy of nasopharyngeal carcinoma may have different changes, which may cause damage to ear function. Its understanding may help the treatment of nasopharyngeal carcinoma after radiotherapy.