Pulmonary embolism and pulmonary infarction

Pulmonary embolism (PE), also known as pulmonary thromboembolism, is a clinical and pathophysiological syndrome of pulmonary circulation disorders caused by endogenous or exogenous emboli blocking the trunk or branch of the pulmonary artery. If further pulmonary hemorrhage or necrosis occurs on this basis, it is called pulmonary infarction, and the two are sometimes difficult to distinguish clinically.

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