小儿肺炎支原体肺炎高分辨率CT影像学特点

目的 通过对小儿肺炎支原体肺炎的肺部高分辨率CT影像学资料进行总结,分析肺炎支原体肺炎高分辨率CT影像特点.方法 回顾2010年1～l2月于中国医科大学附属盛京医院儿呼吸科住院的66例临床诊断为肺炎支原体肺炎患儿的临床资料（血清学及咽拭子DNA符合支原体感染）,对肺部CT特点进行归纳总结（其中男30例,女36例,年龄3个月～13岁,平均年龄7岁）.结果 小儿肺炎支原体肺炎最常见的肺高分辨率CT改变为支气管壁增厚,比例高达69.9％,其次支气管增厚充气征高达65.1％,在各年龄组无明显差异（P＞0.05）;磨玻璃样改变占15.1％,散在斑片状阴影占45.5％,在幼儿组更为常见;肺部实变占48.4％,“树芽征”总体比例占34.8％,在年长儿童中多见.结论 小儿肺炎支原体肺炎肺部高分辨率CT影像学特点主要有支气管壁增厚充气,“树芽征”“树雾征”,磨玻璃样改变,散在斑片状阴影,肺实变.肺CT可辅助早期肺炎支原体肺炎的诊断.

The characteristics of high-resolution CT imaging of mycopalsma pneumonia in children

Objective According to the clinical imaging for mycoplasma pneumoniae pneumonia,lung CT imaging features of mycoplasma pneumoniae pneumonia were summarized in children.Methods The CT findings and clinical features of 66 patients were retrospectively reviewed（average age was 7 years with 30 males and 36 females） with confirmed pneumoniae pneumonia.The CT images were analyzed by two experienced pulmonologists.Results The most common finding in the mycoplasma pneumoniae pneumonia group was bronchial wall thickening with 69.9％,air bronchogram up 65.1％,over all age groups there was no significant difference;ground-glass-like changes up to15.1％,scattered patchy shadows up to 45.5％,more common in infants; lung consolidation accounted for 48.4％,＂ tree bud＂ accounted for 34.8％,the above results more common in older children.Conclusions Mycoplasma pneumoniae pneumonia HRCT imaging features include：bronchial wall thickening inflatable,＂ the tree bud tree fog＂ sign,ground glass-like changes,scattered patchy shadows,dense coalescent consolidation,and lung CT may improve the early diagnosis of mycoplasma pneumonia.