Which histologic findings are characteristic of acute stasis dermatitis?

Updated: Mar 27, 2020
  • Author: Scott L Flugman, MD; Chief Editor: Dirk M Elston, MD  more...
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Skin biopsy of stasis dermatitis, although rarely indicated, shows an acute or subacute dermatitis. Acute lesions may exhibit a superficial, perivascular lymphocytic infiltrate; epidermal spongiosis; serous exudate; scale; and crust. Chronic lesions may show epidermal acanthosis with hyperkeratosis. The dermis is characterized by deep dermal aggregates of siderophages due to uptake of hemosiderin from degraded erythrocytes. Dermal capillaries are frequently dilated; long-standing lesions show intimal thickening of small arterioles and venules along with dermal fibrosis.

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