小儿肺炎支原体肺炎数字X线胸片影像诊断

The role of chest digital radiography in children with mycoplasma pneumonia

目的:探讨数字X线胸部摄影对小儿肺炎支原体肺炎的诊断价值。方法:对41例血清IgM抗体滴度升高4倍以上的患儿的初次胸部X线平片影像表现进行回顾性分析。结果:37例(90.3%)显示段、叶性分布实变影,8例(19.5%)显示结节样小叶气腔实变,19例(46.3%)显示支气管血管束周围浸润。4例(9.7%)病变累及双肺,30例(73.2%)累及下肺野。第2次抗体滴度≥1280的患儿肺内病变累及范围大于第2次抗体滴度≤640的患儿(χ2=8.789,P=0.003)。结论:叶段分布气腔实变、支气管血管束周围浸润是小儿肺炎支原体肺炎最常见的胸部X线影像表现,结节样小叶中心气腔实变显示率较低。肺炎支原体抗体滴度升高程度可能与肺内病变的严重程度有关。

Objective：The purpose of the study was to evaluate the role of chest digital radiography in children with mycoplasma pneumonia.Methods：We retrospectively studied the initial chest digital radiography of 41 cases with mycoplasma pneumonia,whose serum IgM antibody titers increased by four folds.Results：37cases（90.3%）showed lobar or segmental consolidation,8cases（19.5%）demonstrated nodular centrilobular or lobular consolidation,9cases（46.3%）showed peribronchial/perivascular interstitial infiltration.4cases（9.7%）had the lesions distributed bilaterally,30cases（73.2%）had the lesions involved lower lung field.The range of lesions in those patients with IgM antibody titers≥1280in the 2nd round were larger than that in those with IgM antibody titers≤640（χ^2=8.789,P=0.003）.Conclusions：The radiographic manifestations of pediatric mycoplasma pneumonia varied.Lobar or segmental consolidation,peribronchial/perivascular interstitial infiltration were the most common findings.Nodular centrilobular/lobular consolidation were relatively rarely assessed.The level of antibody titer was suggested to have positive relationship with the degree of seriousness of pulmonary lesions.