双语教学

Explain of Pulmonary Pathology

62.Lungs, bullous emphysema, gross

The chest cavity is opened at autopsy to reveal numerous large bullae apparent on the surface of the lungs in a patient dying with emphysema.Bullae are large dilated airspaces that bulge out from beneath the pleura.Emphysema is characterized by a loss of lung parenchyma by destruction of alveoli so that there is permanent dilation of airspaces.

（本图片资料来源自美国犹他大学）