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Skin - Nonmelanocytic tumors

Vascular tumors

Reactive angioendotheliomatosis


Reviewer: Christopher Hale, M.D. (see Reviewers page)
Revised: 19 August 2012, last major update August 2012
Copyright: (c) 2001-2012, PathologyOutlines.com, Inc.

General
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● Usually occurs in skin, associated with systemic disease

Micro description
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● Multiple clusters of closely packed capillaries lined by endothelial cells without atypia
● Also striking proliferation of endothelial cells forming capillaries within preexisting dilated blood vessels
● May have fibrin microthrombi, epithelioid endothelium

Positive stains
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● CD31, CD34, factor VIII related antigen

End of Skin - Nonmelanocytic tumors > Vascular tumors > Reactive angioendotheliomatosis


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