Small bowel (small intestine)

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Small bowel (small intestine)

Benign tumors and tumor-like conditions

Lipoma

Reviewer: Hanni Gulwani, M.D. (see Reviewers page)
Revised: 22 December 2012, last major update August 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
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● Rare, usually submucosal
● May cause ulceration or intussusception
● Lipohyperplasia often found near ileocecal valve

Case reports
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● 45 year old man with ileocecal Intussusception due to lipoma (N Engl J Med 2009;361:e55)
● 52 year old woman with pedunculated lesion of terminal ileum (J Med Case Rep 2010;4:51)
● 77 year old man with ileocecal valve lipoma (JSLS 2009;13:80)

Gross description
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● Bright yellow, round, encapsulated
● Bulges into lumen, 5% multiple
● May have hemorrhage or necrosis

Gross images
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Large pedunculated polypoid lipoma

Micro images
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Circumscribed collection of mature adipocytes

Differential diagnosis
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● Lipomatosis: bowel infiltrated by mature fat

End of Small bowel (small intestine) > Benign tumors and tumor-like conditions > Lipoma

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