All received specialized examination, Chinese speech intelligibility test and blowing test before speech treatment, 17 cases underwent posterior pharyngeal flap operation before speech treatment.

• 所有患者在语音治疗前均接受常规的专科检查、汉语语音清晰度测试和吹水泡试验，其中17例患者曾行咽后壁组织瓣转移术。