CTICasesPulmonary Infarction
Imaging findings
CT of the chest shows a large, wedge-shaped area of consolidation with disordered internal aeration and peripheral enhancement in the right lower lobe. A subsequent contrast-enhanced CT shows a large thromboembolus obstructing the right lower lobe pulmonary artery, confirming the consolidation represents a pulmonary infarct secondary to pulmonary embolism.
Key takeaways
Pulmonary infarction is a common sequela of acute pulmonary embolism, typically presenting as a peripheral, wedge-shaped consolidation (Hampton's hump). On CT, the presence of disordered internal aeration (representing preserved gas-filled airspaces or necrosis) can mimic a necrotizing pneumonia or mucormycosis, and contrast-enhanced CT is diagnostic by demonstrating the occluding thromboembolus.
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