(A) Parasagittal CT angiography image of the aorta demonstrates diffuse thickening and enhancement of the aortic wall along the thoracic aorta and great vessels (thin arrows) in a patient with biopsy-proved GCA. (B) Axial CT angiography image of the aorta demonstrates thickening and enhancement of the aortic wall at the level of the right renal artery.
GCA: giant cell arteritis, also known as Horton disease, cranial arteritis, and temporal arteritis; CT: computed tomography.
