Cite this page: Reactive angioendotheliomatosis. PathologyOutlines.com website. http://pathologyoutlines.com/topic/skintumornonmelanocyticreactiveangioendotheliomatosis.html. Accessed December 13th, 2017.
Definition / general
- Usually occurs in skin; associated with systemic disease
Microscopic (histologic) description
- 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