目的 探讨儿童闭塞性细支气管 炎的临床特征及CT影像表现。方法 回顾 分析我院儿科60例闭塞性细支气管炎患 儿临床资料，所有患儿均接受肺部CT检 查，分析患儿临床表现及CT图像特征。 结果 临床症状：持续性咳嗽、气促，伴 呼吸困难者32例(53.3%)，伴间断发热 者39例(65.0%)，伴活动后气促者28例 (46.7%)；体征检查：肺部均可闻及干湿 啰音者37例(80.4%)；可闻及喘鸣音者44 例(73.3%)，合并三凹征者28例(46.7%)； 肺部CT检查显示存在马赛克灌注征者43例 (71.7%)，单侧透明肺者3例(5.0%)，支 气管壁增厚者20例(33.3%)，合并肺不张 者6例(10.0%)，合并支气管扩张者13例 (21.7%)，支气管粘液栓4例(6.7％)。结 论 肺部CT可较清楚地显示小气道的形态 学变化特点，较病原学检查、肺功能检测 具有无创、精确、可重复等优点，为临床 诊断提供一定参考价值。

Objective To explore the clinical features and CT imaging of bronchiolitis obliterans in children. Methods The clinical data of 60 children with bronchiolitis obliterans in the department of pediatrics of our hospital were retrospectively analyzed. All the children were given the pulmonary CT examination, and the clinical manifestations and CT imaging features were analyzed. Results In terms of clinical symptoms, there were 32 cases (53.3%) of patients with persistent cough, shortness of breath and dyspnea, and 39 cases (65.0%) with intermittent fever and 28 cases (46.7%) with shortness of breath after activities. From the respect of physical examination in the lungs, there were 37 cases (80.4%) of dry and wet rales, and 44 cases (73.3%) with wheezing rales and 28 cases (46.7%) with combined three depressions sign. Pulmonary CT examination showed that there were 43 cases (71.7%) of patients with mosaic perfusion, 3 cases (5.0%) with unilateral transparent lung, 20 cases (33.3%) with bronchial wall thickening, 6 cases (10.0 %) with combined pulmonary atelectasis, 13 cases (21.7%) with combined bronchial dilatation and 4 cases (6.7%) with bronchial mucus. Conclusion Pulmonary CT can clearly show the small airway morphological changes, and has the noninvasive, accurate and repeatable advantages compared with the pathogen examination and pulmonary function test, and it can provide a certain reference value for the clinical diagnosis.