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目的探讨肺泡微石症的ＣＴ表现及诊断价值。方法回顾性分析９例经活检病理证实或临床综合确诊的肺泡微石症ＣＴ表现。结果常规ＣＴ表现：肺窗示肺实质内有无数细小散在的粟粒结节，以中下肺的外周部密集，其ＣＴ值为２００～４００ＨＵ，多合并不同程度的肺气肿及间质纤维化；纵隔窗示细结节影最密集区常呈沿胸膜的线带状或散在的点簇状钙化，形成“火焰征”及“白描征”。高分辨率ＣＴ（ＨＲＣＴ）表现：肺野似磨玻璃样，结节大小稍有区别，沿支气管血管束分布偏多及小叶间隔增厚。结论ＣＴ尤其ＨＲＣＴ能更准确地反映本病的综合病理特点及病程，在诊断及鉴别诊断中起决定性作用。
Objective To investigate the CT findings and diagnostic value of alveolar microlithiasis. Methods Retrospective analysis of 9 cases confirmed by biopsy pathology or clinically diagnosed alveolar microlithiasis CT findings. Results The results of routine CT showed that there were countless tiny scattered miliary nodules in the pulmonary parenchyma. The peripheral part of the middle and lower lungs was dense. The CT value was 200-400HU, with multiple emphysema and interstitial fibrosis ; Mediastinum window showed the most dense nodules film often pleated along the pleural line or scattered clusters of calcification, the formation of “flame sign” and “white strokes sign.” High-resolution CT (HRCT) performance: Pulmonary field like glass-like, nodular size slightly different, along the distribution of bronchovascular bundles and interlobular septa thickening. Conclusion CT especially HRCT can more accurately reflect the comprehensive pathological features of the disease and course of disease, plays a decisive role in the diagnosis and differential diagnosis.