Small intestine & ampulla

Infectious disorders


Topic Completed: 1 August 2012

Minor changes: 19 January 2021

Copyright: 2003-2021,, Inc.

PubMed Search: Salmonella[TI] small bowel[mh] free full text[sb]

Hanni Gulwani, M.B.B.S.
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Cite this page: Gulwani H. Salmonella. website. Accessed November 29th, 2021.
Definition / general
  • Bacterial causing food poisoning and typhoid fever (S. typhi)
  • Typhoid fever: systemic dissemination with bacteremia, fever, chronic infection of joints, biliary tree, bones and meninges
  • From contaminated milk, eggs, beef, poultry
  • Usually affects terminal ileum
Gross images

Case #362

Microscopic (histologic) description
  • Ulcers overlying Peyer patches with minimal inflammatory cells, chiefly mononuclear (plasma cells, histiocytes and lymphocytes)
  • Often histiocytes with erythrophagocytosis
  • May lead to perforation or toxic megacolon
Microscopic (histologic) images

Case #362

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