What are the histologic features suggestive of Takayasu arteritis in the early phase?

Updated: Nov 14, 2018
  • Author: Jefferson R Roberts, MD; Chief Editor: Herbert S Diamond, MD  more...
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In the early phase of Takayasu arteritis, histologic features include granulomatous changes in the media and adventitia of the aorta and its branches, followed by intimal hyperplasia, medial degeneration, and adventitial fibrosis of the sclerotic type. The duration is variable. Inflammatory cells—predominantly CD4 and CD8 lymphocytes, macrophages, plasma cells, histiocytes, and giant cells—invade the adventitia and media but not the intima.

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