气道阻塞间接征象
黏液潴留
巨噬细胞聚集
肺过度充气
细支气管变形扩张 支气管上皮细胞肥大,上皮层变厚,管腔可出现 阻塞甚或闭塞
Constrictive bronchiolitis in SLE
肺泡灌洗液中以中性粒细胞增多为主 部分区域淋巴细胞增多 中性粒细胞趋化因子IL-8浓度增高 这些变化仍存在于肺损伤数年之后
Postinfectious bronchiolitis obliterans (PIBO) is an irreversible obstructive lung disease characterized by subepithelial inflammation and fibrotic narrowing of the bronchioles after lower respiratory tract infection during childhood, especially early childhood .
Recent studies of clinical prediction rules to diagnose PIBO in children found that typical clinical history, adenovirus infection, and high-resolution computed tomography with mosaic perfusion were highly predictable variables32).
Pathology
病因不同,但组织病理学改变相似 缩窄性细支气管炎和增殖性细支气管炎 增殖性细支气管炎以肉芽组织在气道内呈息肉团块 增生为特征 肺泡腔内亦出现肉芽组织时,则称为 闭塞性细支气管炎伴机化性肺炎(BOOP)