CTICasesGiant Cell Arteritis
Imaging findings
Chest CT angiogram shows mild, circumferential wall thickening of the descending and ascending thoracic aorta, extending into the great vessels and abdominal aorta. Positron emission tomography/computed tomography (PET/CT) demonstrates dramatic, intense, diffuse, circumferential FDG uptake throughout the entire course of the thoracic and abdominal aorta, as well as the proximal subclavian arteries.
Key takeaways
Giant cell arteritis is a large-vessel vasculitis that can show subtle, difficult-to-perceive wall thickening on CT but exhibits highly prominent and intense circumferential FDG uptake on PET/CT. PET/CT is a valuable non-invasive tool for determining the full extent of large-vessel involvement.
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