Colon non tumor
Non-neoplastic, non-congenital lesions
Reactive angioendotheliomatosis

Author: Raul S. Gonzalez, M.D. (see Authors page)

Revised: 9 January 2017, last major update October 2013

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

PubMed search: reactive angioendotheliomatosis

Cite this page: Reactive angioendotheliomatosis. website. Accessed July 21st, 2018.
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