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To approach the mechanism of lipopolysaccharide (LPS) in causing acute lung injury (ALI) and the protective effect of rhubarb and dexamethasone, lung specimens were examined with macroscopy, microscopy, electron microscopy and the biological markers of ALI including lung wet/dry weight, the rate of neutrophils and protein content in the pulmonary alveolar lavage fluid, pulmonary capillary permeability and pulmonary alveolar permeability index were observed. The mechanism of the ALI is mainly due to direct injury of alveolar epithelium and pulmonary vascular endothelium. Rhubarb and dexamethasone could significantly reduce the edema of the lung tissue, decrease the red blood cell exudation, neutrophil infiltration and plasma protein exudation in the alveoli and all the biological markers in comparison with the ALI model rats, indicating they have protective action on vascular endothelium and alveolar epithelium.
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肺泡性腺瘤的影像表现一例
患者男,58岁.因心律失常心脏起搏器植入术前X线胸片发现肺部肿块,于2009年10月19日就诊,主诉反复头晕10余年,眩晕2年.既往无咳嗽、咯痰、气急、胸痛等呼吸系统症状.体检示两肺呼吸音清,心率60次/min,律不齐,未闻及病理性杂音.动态心电图示阵发性房颤伴部分心室长间歇.
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左上肺叶肺泡微结石症合并腺癌1例
肺泡微结石症(pulmonary alveolarnicrolithiasis),是一种以肺泡内涵细纱样结石伴(或不伴)有肺实质纤维化为特征的少见疾病,我院胸外科于2003年4月7日曾收治左上肺叶肺泡微石症合并细支气管肺泡癌1例,现报告如下.