Autopsy revealed a large wedge-shaped patch of a dense dark red tissue with clear margins in the upper lobe of the right lung. Histological examination detected there necrosis of the alveolar walls; the alveolar lumen is tightly packed with erythrocytes. What process occurred in the lungs?

Answer options

1. Hemorrhagic infarction
2. Carneous degeneration
3. Gangrene
4. Hemorrhage
5. Atelectasis

Explanation

Autopsy revealed a large wedge-shaped patch of a dense dark red tissue with clear margins in the upper lobe of the right lung. Histological examination detected there necrosis of the alveolar walls; the alveolar lumen is tightly packed with erythrocytes. What process occurred in the lungs?Hemorrhagic infarction; Hemorrhagic: dark red tissue due to packed RBC; infarction: vascular necrosis of alveolar walls