CTICasesPulmonary Artery Mycotic Pseudoaneurysm
Imaging findings
A middle-aged patient with a history of IV drug use presented with a large, circumscribed area of high attenuation within a necrotizing pneumonia on CT. Pulmonary arteriography confirmed a large pseudoaneurysm arising from a pulmonary artery branch.
Key takeaways
In the setting of necrotizing pneumonia and hemoptysis, consider a mycotic pseudoaneurysm. Angiography is essential to distinguish between pulmonary artery and systemic (bronchial) arterial sources.
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