Colon tumor - Perivascular epithelioid cell tumor of colon

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Colon tumor

Mesenchymal tumors

Perivascular epithelioid cell tumor 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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● Rare
● May overlap with angiomyolipoma

Case reports
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● 7 year old Korean child with low grade PEComa (full text: Korean J Pediatr;53:975)
● 40 year old British woman with large, mainly extrinsic mass and monotypic type (J Clin Pathol 2005;58:1107)
● 43 year old Japanese woman with malignant tumor attached to colonic serosa (Pathol Int 2006;56:46)
● Cecal tumor in young woman (Dis Colon Rectum 2004;47:1734)

Micro description
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● Sheets of epithelioid cells with clear or eosinophilic cytoplasm

Micro images
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Low power; high power

HMB-45 staining

Positive stains
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● HMB45, smooth muscle actin and desmin

Negative stains
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● S100, cytokeratin

End of Colon tumor > Mesenchymal tumors > Perivascular epithelioid cell tumor of colon

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