CTICasesPulmonary Artery Aneurysms in Behçet Disease
Imaging findings
CT angiography shows multiple, large, bilateral pulmonary artery aneurysms, with focal areas of occlusion and pulmonary infarction. Coils from prior aneurysm embolization are noted, showing a fistulous tract communication to an adjacent bronchus.
Key takeaways
Behçet disease is a systemic vasculitis that uniquely causes pulmonary artery aneurysms. Transcatheter embolization is the primary treatment, but the coil pack can erode the adjacent bronchial wall, creating a bronchoarterial fistula and predisposing patients to massive hemoptysis.
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