CTICasesSeptic pulmonary emboli and mycotic pseudoaneurysm
Imaging findings
Chest CT shows multiple bilateral, randomly distributed peripheral cavitary nodules and areas of consolidation. Echocardiogram confirms a large tricuspid valve vegetation, and follow-up CT demonstrates the development of a mycotic pseudoaneurysm in the right lower lobe pulmonary artery.
Key takeaways
Septic pulmonary emboli commonly result from right-sided infective endocarditis in intravenous drug users, presenting as bilateral, peripheral, cavitating nodules. A serious complication is the development of a mycotic pulmonary artery pseudoaneurysm, which may require monitoring or coil embolization.
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