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Findings in Appendectomies with Enterobius vermicularis Infection: Pinworm Is Not A Cause of Appendicitis

Burçin Pehlivanoğlu1, Bilge Aydın Türk1, Serap İşler1

  • 1Adıyaman University Training and Research Hospital, Department of Pathology, Adıyaman, Turkey

Turkiye Parazitolojii Dergisi
|April 3, 2019
PubMed
Abstract

Insights

Enterobius vermicularis infection is an incidental finding in appendectomies, often causing lymphoid hyperplasia (LH) that mimics appendicitis. This study evaluated histopathological findings in 24 cases of appendectomy with E. vermicularis infection.

Area of Science:

  • Gastroenterology
  • Pathology
  • Parasitology

Background:

  • Appendectomy is a common surgical procedure.
  • Enterobius vermicularis (pinworm) infection is prevalent worldwide.
  • Histopathological examination of appendectomy specimens is crucial for diagnosis.

Purpose of the Study:

  • To investigate the histopathological characteristics of appendectomy specimens with Enterobius vermicularis infection.
  • To determine the association between E. vermicularis infection and appendicitis.

Main Methods:

  • Retrospective analysis of 24 appendectomy cases with E. vermicularis infection.
  • Evaluation of histopathological findings including inflammation, lymphoid hyperplasia (LH), and presence of fecal matter.
  • Correlation of findings with patient demographics and clinical presentation.

Main Results:

  • E. vermicularis infection was found in 0.74% of 3222 appendectomies.
  • The most common findings were LH (100%) and congestion (91.7%).
  • Acute appendicitis was present in 2 cases where only E. vermicularis was found, and periappendicitis was associated with younger patients.

Conclusions:

  • E. vermicularis infection is often an incidental finding in appendectomies.
  • The infection likely stimulates LH, which can clinically mimic acute appendicitis.
  • Histopathological analysis is key to differentiating true appendicitis from infection-induced changes.
Keywords:
AppendixappendicitisEnterobius vermiculariseosinophilic infiltrationlymphoid hyperplasia

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