Twenty-nine percent underwent pharyngeal surgery at the time of first MTI procedure, and of these, 7.4% (1,096) had pharyngeal surgery in the absence of adenoid or tonsil disease.

• 29%25的病例在首次MTI治疗的同时行咽部手术，其中7.；4%25的病例（1096例）在咽部手术时缺乏腺样体或扁桃体病变表现。