CTICasesTakayasu's arteritis
Imaging findings
Contrast-enhanced CT of the aorta shows wall thickening and enhancement of the branch vessels and a stent across an aneurysm in the descending aorta. In the ascending aorta, a subtle thrombus at the graft anastomosis is visible on delayed-phase imaging, which was masked by turbulent flow on the arterial phase.
Key takeaways
Takayasu's arteritis is a large-vessel vasculitis that can lead to aneurysmal disease requiring surgical graft replacement. Anastomotic thrombi or intimal injuries can occur post-operatively and may be masked by turbulent flow (smoke artifact) on routine arterial phase CT, necessitating delayed imaging for detection.
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