CTICasesSystemic Artery Pseudoaneurysm
Imaging findings
A patient with chronic lung disease and a prior mycetoma presented with hemoptysis. While initially suspected to be a pulmonary artery source, angiography revealed the pseudoaneurysm was fed by a dilated intercostal artery.
Key takeaways
Chronic inflammatory lung conditions can lead to collateral systemic vessel development, which may become the source of bleeding (pseudoaneurysm) rather than the pulmonary artery.
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