目的 分析胸部CT在98例小儿支 原体肺炎(MPP)诊断的临床应用价值。方 法 回顾性分析我院2014年03月至2016年 2月确诊为MPP 98例患儿临床资料及胸部 CT结果。结果 单侧肺叶病变64例中，局 限于右侧44例，局限于左侧20例，其中右 侧病变例数44例多于左侧20例，而多叶段 病变62例，明显多于单叶段病变例数34 例，其中多叶段病变中以右侧下叶受累例 数最多为32例。患儿病变以大片实变状影 为主(79.59%)，明显多于其他影像学病变 例数，其余影像学病变主要变现为斑点 状及斑片状实变影(32.65%)、胸腔积液 (25.51%)、肺不张(20.41%)、散在斑片状 影(13.27%)、肺门淋巴结肿大(12.24%)。 婴幼儿多表现为散在斑片状影和肺不张， 年幼儿多表现为大片实变状影、斑点及斑 片状实影，也伴随胸腔积液。结论 小儿 支原体肺炎胸部CT表现具有一定特征性且 存在年龄差异，胸部CT诊断有助于不同年 龄段患儿支原体肺炎的早期诊断，有助于 指导支原体肺炎患儿早期临床治疗。

Objective To analyze the clinical value of chest CT in the diagnosis of 98 children with mycoplasma pneumoniae pneumonia (MPP). Methods The clinical data the results of chest CT of 98 children with MPP diagnosed in our hospital from March 2014 to February 2016 were analyzed retrospectively. Results Among 64 cases of unilateral lung lesions, lesions confined to the right side were more than the left side (44 cases vs 20 cases). The multi-lobe lesions were significantly more than single-lobe lesions (62 cases vs 34 cases), and among multi-lobe lesions, cases of right lower lobe involvement were the most (32 cases). Cases with massive consolidation shadows (79.59%) were significantly more than cases with other imaging lesions. The imaging lesions mainly included mottling and patchy solid shadows (32.65%), pleural effusion (25.51%), atelectasis (20.41%), scattered patchy shadows (13.27%) and lung hilar lymph node enlargement (12.24%). Infants mainly showed scattered and patchy shadows and lung atelectasis, while children mainly showed large-area solid change shadows, mottling and patchy shadows, complicated with pleural effusion. Conclusion Chest CT findings of children with MPP are characteristic and are different in different age groups. Chest CT diagnosis is helpful for early diagnosis and treatment of MPP in children of different ages.