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Colon tumor

Mesenchymal tumors

Pyogenic granuloma of colon


Reviewers: Charanjeet Singh, M.D. (see Reviewers page)
Revised: 16 May 2012, last major update May 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
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● Also called lobular capillary hemangioma
● Very rare
● Presents clinically as “occult” gastrointestinal bleeding and anemia

Case reports
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● 62 year old woman with rectal bleeding (Ann Diagn Pathol 2005;9:106)

Micro description
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● Lobular arrangement of capillaries within edematous stroma
● Endothelial cells often swollen; often surface ulceration
● Occasionally mitotic figures

Positive stains
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Endothelial cells: CD34, Factor VIII (Am J Surg Pathol 1995;19:1054)

Differential diagnosis
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● Inflammatory polyp
● Bacillary angiomatosis
● Kaposi’s sarcoma

End of Colon tumor > Mesenchymal tumors > Pyogenic granuloma of colon


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