摘要
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。
Purpose To study the CT findings and evaluate the value of CT in the diagnosis of pulmonary alveolar microlithiasis(PAM). Methods The CT findings of 9 cases of PAM proved by lung biopsy or clinical diagnosis were retrospectively analysed. Results On conventional CT, pulmonary window revealed widespread intraalveolar calcifications of both lungs concentrating in the subpleural parenchyma of the middle and lower lobes. The CT value of microliths ranged from 200 to 400HU, usually combined with pulmonary emphysema and interstitial fibrosis; Mediastinal window showed linear calcifications along pleura or scattered punctate calcifications in the concentrated area of microliths looking like flame or white line in the medial border. On HRCT, pulmonary window revealed diffuse ground glass appearance, nodules of different sizes, more microliths along the bronchovascular bundles and thickening of lobular septa. Conclusion CT, especially HRCT, can better demonstrate pathological features and stage of PAM, playing an important role in diagnosis and differential diagnosis.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
1998年第7期466-468,共3页
Chinese Journal of Radiology
关键词
肺泡微石症
CT
诊断
肺疾病
Lung diseases Calcinosis Tomography,X ray computed Diagnostic imaging
