Colon nontumor
Other non-neoplastic
Reactive angioendotheliomatosis

Topic Completed: 1 October 2013

Revised: 9 January 2019, last major update October 2013

Copyright: (c) 2003-2017,, Inc.

PubMed search: reactive angioendotheliomatosis

Raul S. Gonzalez, M.D.
Page views in 2019: 453
Page views in 2020 to date: 279
Cite this page: Gonzalez R. Reactive angioendotheliomatosis. website. Accessed July 7th, 2020.
Definition / general
  • Intravascular proliferation of endothelial cells
  • Typically seen in skin; extremely rare in colon, with only one case reported
Clinical features
  • Only reported patient experienced massive gastrointestinal bleeding
Case reports
Gross description
  • Numerous shallow colonic ulcers
Microscopic (histologic) description
  • Intravascular proliferation of endothelial cells resembling glomeruloid hemangioma
Positive stains
Differential diagnosis
Additional references
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