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Yersinia Pseudo-Appendicitis — SCE Infectious Diseases MCQ

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EasyTropical & Imported InfectionsYersinia Pseudo-AppendicitisSCE Infectious Diseases

A 28-year-old man presents with right iliac fossa pain and fever. CT shows terminal ileitis with mesenteric lymphadenopathy. Stool grows Yersinia enterocolitica. What diagnosis does this mimic?

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Correct answer: A — Acute appendicitis — Yersinia terminal ileitis is the classic pseudo-appendicitis syndrome

Yersinia terminal ileitis/mesenteric lymphadenitis mimics appendicitis. It is usually self-limiting. Iron overload predisposes to severe disease.

Reference: UKHSA 2023 – Yersinia; NICE CKS 2024