CTICasesTakayasu Arteritis with Pulmonary Artery Occlusion
Imaging findings
CT angiography shows concentric wall thickening of the thoracic aorta and great vessels, along with severe narrowing and occlusion of the right lower lobe pulmonary artery, resulting in mosaic perfusion and systemic collaterals recruited from the celiac axis.
Key takeaways
Takayasu arteritis is a large-vessel vasculitis that primarily involves the aorta. However, pulmonary artery stenosis or occlusion is a well-documented manifestation that can lead to chronic hypoperfusion, mosaicism, and systemic collateral recruitment.
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