What is the histopathologic characterization of Takayasu arteritis?

Updated: Nov 14, 2018
  • Author: Jefferson R Roberts, MD; Chief Editor: Herbert S Diamond, MD  more...
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Takayasu arteritis is characterized by a special pattern of histopathologic changes. The early stage consists of a continuous or patchy granulomatous inflammatory reaction involving macrophages, lymphocytes, and multinucleated giant cells. Inflammation initially occurs in the vasa vasorum, with the artery wall becoming irregularly thickened and the lumen becoming narrowed. Takayasu arteritis progresses to a sclerotic stage, with intimal and adventitial fibrosis and scarring of the media. Lesions are initially inflammatory and later become occlusive.

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