许多急慢性肺部疾病可有不同程度的肺组织炎症及纤维化 ,可统称为肺间质疾病 (IL D)、弥漫性间质性肺疾病 (DIL D)或弥漫性肺实质疾病 (DPL D) ,三者含义相同。其实弥漫性肺间质疾病的病理改变并非局限于肺间质 ,而是表现为弥漫性肺泡单位即肺实质受损和肺间质的结缔组织成分过 Many acute and chronic lung diseases may have varying degrees of lung inflammation and fibrosis and may be referred to as interstitial lung disease (IL D), diffuse interstitial lung disease (DIL D) or diffuse pulmonary parenchymal disease (DPL D ), The same three meanings. In fact, the pathological changes of diffuse interstitial lung disease is not confined to the lung interstitium, but rather diffuse alveolar units that damage the lung parenchyma and interstitial connective tissue components