What does a hypoechoic halo around the temporal artery on a sonogram indicate during a workup of giant cell arteritis (GCA) (temporal arteritis)?

Updated: Sep 10, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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The halo represents edema in the artery wall. Some centers consider this finding a major decision-maker in their diagnostic equation, while others do not believe that such a halo is definitive for GCA.

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