Duplex of left mid-subclavian artery in giant cell arteritis

Halo sign at the mid-subclavian artery in a patient with biopsy-proven GCA, indicating large vessel involvement.

GCA: giant cell arteritis, also known as Horton disease, cranial arteritis, and temporal arteritis.

Courtesy of William Docken, MD.

Graphic 109704 Version 3.0

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