The most common airway abnormality was laryngeal paralysis, seen in 32 patients, followed by subglottic stenosis, which was seen 18 patients.
最常见的气道异常是喉麻痹（见于32名患者），其次是声门下狭窄（见于18名患者）。
2
To explore the significance of the expression of inflammation cell in the laryngeal stricture scar by the study of the pathological features of laryngealstenosis scar.
通过喉狭窄瘢痕组织的病理学研究，了解炎症细胞在狭窄瘢痕组织表达及意义。
3
To explore the significance of the change of extracellular matrix in the laryngealstenosis scar by the study of the pathological features of laryngealstenosis scar.