细支气管炎影像学特征

摘要

Bronchiolitis is the most common lower respiratory inflammation in infants younger than 5 years.Pathogens are variable,and the majority of bronchiolitis were caused by infection.The radiological presentations of bronchiolitis include direct signs (bronchiol-ectasis,tree-bud,central lobular nodules) and indirect signs (air trapping,Mosic sign).Bronchiolitis caused by different entities will present different presentations.The combination of clinical information and radiological findings will provide evidence for correct diagnosis.%细支气管炎为5岁以下儿童最常见的下呼吸道炎性病变,病因多样,其中以感染性细支气管炎最多见.细支气管炎性病变引起的放射表现主要包括直接征象(细支气管扩张、树芽征和小叶中心阴影)和间接征象(气体滞留和马赛克征).不同病因所致疾病的影像特征存在差别.临床信息和影像学表现可为正确诊断提供依据.