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Colon tumor


Tubulovillous adenoma of colon

Reviewers: Charanjeet Singh, M.D. (see Reviewers page)
Revised: 23 October 2011, last major update August 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.


● Tubular adenomas with 20% to 80% villous component (Am J Surg Pathol 2011;35:212, Best Pract Res Clin Gastroenterol 2010;24:271); otherwise call tubular or villous adenoma
● Rarely presents with liver abscess (World J Gastroenterol 2006;12:990)

Case reports

● 44 year old woman with overlying small cell carcinoma (Arch Pathol Lab Med 2005;129:412)
● 56 and 67 year old men with intussusception (World J Gastroenterol 2006;12:146, Surg Today 2000;30:441)
● 73 year old woman with associated malakoplakia (Ann Diagn Pathol 2004;8:364)
● With metastatic epithelioid angiosarcoma (Tumori 2005;91:210)
● With gastric heterotopia (N J Med 1995;92:512)

Gross images

Tubulovillous adenoma

Micro images


Various images #1, #2, #3, #4, #5, with high grade dysplasia


● May be associated with EGFR overexpression (Am J Med Sci 2010;340:296)

End of Colon tumor > Polyps > Tubulovillous adenoma

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