Small bowel (small intestine)
Other malignancies
Kaposi sarcoma

Topic Completed: 1 August 2012

Revised: 15 March 2019

Copyright: 2003-2019,, Inc.

PubMed Search: Kaposi sarcoma small bowel

Hanni Gulwani, M.B.B.S.
Page views in 2019: 265
Page views in 2020 to date: 26
Cite this page: Gulwani H. Kaposi sarcoma. website. Accessed February 27th, 2020.
Definition / general
  • Present in GI tract in 50% with AIDS, although symptoms in only 10% (diarrhea, protein losing enteropathy, abdominal pain)
Case reports
Gross description
  • Multiple reddish brown or purple nodules, 5 - 15 mm
Gross images

Images hosted on other servers:

Various images

Microscopic (histologic) description
  • Spindle cells that expand lamina propria and obliterate muscularis mucosa, extravasated red blood cells
  • Often submucosal involvement
Microscopic (histologic) images

Images hosted on other servers:

Kaposi sarcoma involving
duodenal lamina propria;
submucosal involvement
is more common

Kaposi sarcoma of stomach, showing characteristic eosinophilic
cytoplasmic inclusions (arrowheads), which may represent
residua of phagocytosed red cells; inclusions are 60%
sensitive for Kaposi sarcoma and relatively specific

Positive stains
Negative stains
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