Pulmonary infarct in an area of passive congestion. The hemosiderin-laden macrophages present inside the alveolar lumen are witnesses of pre-existent passive congestion.
Pulmonary (hemorrhagic) infarct produced by venous thrombosis.
Sunday, April 03, 2011
Histology and Explanation of Hemorrhagic infarct lung
Pulmonary infarct (hemorrhagic infarct of the lung) is an area of ischemic necrosis produced by venous thrombosis on a background of passive congestion of lung. In infarct area, alveolar walls, vascular walls and bronchioles are necrotic. They appear eosinophilic (pink), homogenous, lacking the nuclei, but keep their shapes - "structured necrosis". Alveolar lumens from infarcted area are invaded by red blood cells - hemorrhagic infarct (red).
Pulmonary infarct in an area of passive congestion. The hemosiderin-laden macrophages present inside the alveolar lumen are witnesses of pre-existent passive congestion.
Pulmonary (hemorrhagic) infarct produced by venous thrombosis.
Pulmonary infarct in an area of passive congestion. The hemosiderin-laden macrophages present inside the alveolar lumen are witnesses of pre-existent passive congestion.
Pulmonary (hemorrhagic) infarct produced by venous thrombosis.
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