煤矿尘肺的尘斑气肿

DUST-MACULAE-EMPHYSEMA OF COAL WORKERS PNEUMOCONIOSIS

对８６例煤工尸检肺组织呼吸性细支气管及所属肺泡道发生的尘斑气肿进行了观察。前述部位不同程度煤尘沉着构成尘斑或尘灶。尘灶系呼吸性细支气管壁及肺泡间隔内煤尘沉着不断增多，气腔壁增厚、闭塞或靠拢融合而成。少数尘灶亦可由局灶性肺泡内煤尘细胞聚集填充所致。尘斑或尘灶处伴发的肺气肿，意味着肺组织破坏，肺功能受损。因此，尘斑气肿和尘灶气肿具有同样涵义。

Morphological observations on dust-maculae-emphysema occurred on respiratory bronchiole and alveolar track in 86 autopsy cases of coal workers were performed. In these sections, deposition of coal dust formed dust-maculae or dust-foci. The dust foci were formed due to coal dust increa singly deposited on respiratory bronchiole wall and alveolar mesenchyme, causing the thickening of the alveolar wall and block and fusion of alveolar cavities. A small number of dust-foci were also resulted from coal-dust-cell concentration and filling in local pulmonary alveoli. The emphysema of dust-maculae or dust-foci denoted damage of lung tissue and impairment of pulmonary function. So the dust-maculae-emphysema has the same meaning with the dust-foci-emphysema.