患者 ,女 ,2 8岁。呼吸困难 1年余 ,加重伴声嘶 1 0 + 月 ,无咽喉疼痛及吞咽困难。在当地诊断为 :慢性支气管炎 ,经消炎治疗症状无缓解 ,于 2 0 0 0年 3月 9日收住院。体检 :Ⅱ～Ⅲ度喉梗阻 ,间接喉镜检查见声门下有一新生物阻塞气道 ,只留有一小缝隙。遂在当日作了低位气管切 Patient, female, 28 years old. Difficulty in breathing for more than one year, aggravated hernia 1 0 + months, no throat pain and difficulty swallowing. In the local diagnosis: chronic bronchitis, no remission of symptoms by anti-inflammatory treatment, admitted to hospital on March 9, 2000. Physical examination: II ~ III degree of laryngeal obstruction, indirect laryngoscopy to see a new biological obstruction airway below the glottis, leaving only a small gap. He made a low tracheal incision on the same day.