Which histologic findings are characteristic of the adventitial fibroplasia type of fibromuscular dysplasia (FMD)?

Updated: Jul 27, 2018
  • Author: James A Wilson, MD, MSc, FRCPC; Chief Editor: Helmi L Lutsep, MD  more...
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  • This form results in fewer than 1% of all renal cases of FMD.

  • Dense collagen replaces the normally loose connective tissue of the adventitia.

The percentage occurrence of each type of FMD is largely based on findings from large renal studies and may not reflect the distribution of FMD types in carotid disease. In fact, the medial dysplasia type may be even more predominant when carotid FMD is considered alone.

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