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Skin-nontumor / Clinical Dermatology

Other dermatoses

Stasis dermatitis


Reviewer: Mowafak Hamodat, MB.CH.B, MSc., FRCPC, Eastern Health, St. Johns, Canada (see Reviewers page)
Revised: 2 August 2011, last major update August 2011
Copyright: (c) 2002-2011, PathologyOutlines.com, Inc.

Definition
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● Due to chronic venous stasis, usually on lower extremities
● May have secondary infection and ulcers

Epidemiology
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● Common disorder of middle-aged and older individuals

Clinical description
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● In the early stages, there is edema of the lower one-third of the legs, which have a shiny and erythematous appearance
● Subsequently, dry and scaly or crusted and weeping areas may develop
● Sometimes the changes are most prominent above the medial malleoli

Clinical images
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Acute stasis dermatitis


Stasis dermatitis

Micro description
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● Characterstic lobular pattern of superficial and deep dermal neovascularization with dermal fibrosis, perivascular lymphocytic infiltrates, histiocytes and variable number of plasma cells, extravasated erythrocytes and hemosiderin laden macrophages
● Hyperplasia of endothelial cells
● Variable acanthosis and hyperkeratosis

Additional references
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eMedicine

End of Skin-nontumor / Clinical Dermatology > Other dermatoses > Stasis dermatitis


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