CTICasesPulmonary Artery Pseudoaneurysm post-Aspergillus Mycetoma
Imaging findings
CT angiography shows a pulmonary artery pseudoaneurysm arising from a segmental branch within a pre-existing right upper lobe cavity that contains an Aspergillus mycetoma (fungus ball), associated with active hemoptysis.
Key takeaways
Chronic cavitary pulmonary aspergillosis or mycetomas can erode adjacent pulmonary arteries, leading to life-threatening pseudoaneurysms (Rasmussen's aneurysms). Despite effective systemic therapies, patients with advanced cystic or cavitary disease remain at high risk and frequently require urgent transcatheter coil embolization.
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