Which histologic findings are characteristic of chronic stasis dermatitis?

Updated: Mar 27, 2020
  • Author: Scott L Flugman, MD; Chief Editor: Dirk M Elston, MD  more...
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In chronic stasis dermatitis, biopsy may be necessary if acroangiodermatitis (pseudo–Kaposi sarcoma) has developed. The violaceous plaques and nodules of acroangiodermatitis may be clinically indistinguishable from classic Kaposi sarcoma, especially when they occur in an elderly man. Biopsy samples show changes typical of stasis dermatitis, along with a proliferation of capillaries and fibroblasts. However, the vascular slits and the atypical endothelial cells that are seen in classic Kaposi sarcoma are absent.

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