CTICasesPulmonary Artery Pseudoaneurysm Secondary to Lung Cancer
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Imaging findings
CT angiography demonstrates a massive, rapidly developing pseudoaneurysm arising from a right lower lobe branch of the pulmonary artery, situated directly adjacent to and within a large, necrotic, cavitating non-small cell lung cancer mass that has caused extensive lobar collapse.
Key takeaways
Pulmonary artery pseudoaneurysms can develop rapidly as a complication of cavitating or necrotic lung neoplasms that erode adjacent vascular walls. This rare and life-threatening condition presents with massive hemoptysis and carries a high mortality rate if left untreated.
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