CTICasesSeptic Emboli on Pulmonary MRA
Imaging findings
Contrast-enhanced pulmonary magnetic resonance angiography (MRA) and subsequent CT demonstrate multiple peripheral, enhancing pulmonary nodules throughout both lungs. Several of these nodules show central cavitation and thick, irregular walls.
Key takeaways
While CT is the standard modality for evaluating pulmonary parenchymal diseases, pulmonary MRA performed for suspected pulmonary embolism can successfully detect peripheral, cavitating nodules characteristic of septic emboli. Multi-focal peripheral lung lesions with peripheral enhancement should raise high suspicion for bacteremia and septic embolization.
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