Airway remodelling refers to changes in the airway structure and includes subepithelial fibrosis, increased smooth muscle mass, submucosal gland enlargement, neovascularisation and epithelial alterations.

• 气道重构指气道结构的改变，包括：上皮下纤维化，平滑肌增厚，粘膜下腺体肥大，新生血管形成和上皮的变化。