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Sex, Enterobius vermicularis and the appendix.

D J Williams1, M F Dixon

  • 1Department of Pathology, University of Leeds, UK.

The British Journal of Surgery
|December 1, 1988
PubMed
Summary

Male pinworms (Enterobius vermicularis) were more common in appendices than females. While pinworm sex didn't correlate with inflammation, the presence of ova often did, suggesting ova release may cause appendiceal obstruction.

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Area of Science:

  • Parasitology
  • Gastroenterology
  • Pathology

Background:

  • Enterobius vermicularis, commonly known as pinworms, are intestinal parasites.
  • Appendicitis is a common surgical emergency, and parasitic infections can sometimes complicate its presentation.

Purpose of the Study:

  • To investigate the relationship between Enterobius vermicularis infection and appendiceal inflammation.
  • To determine if the sex of pinworms or the presence of ova correlates with appendiceal pathology.

Main Methods:

  • Retrospective examination of 182 surgically removed appendices.
  • Histopathological analysis to identify Enterobius vermicularis, its sex, and the presence of ova.
  • Correlation analysis between pinworm presence, sex, ova, and appendiceal inflammation.

Main Results:

  • Male pinworms were observed more frequently than female pinworms in the examined appendices.
  • No significant association was found between the sex of pinworms and the presence or severity of appendiceal inflammation.
  • Appendiceal inflammation was frequently observed in cases where luminal ova of Enterobius vermicularis were present.

Conclusions:

  • The sex distribution of Enterobius vermicularis in appendiceal infections shows a male predominance.
  • While pinworm presence itself may not directly cause inflammation, the presence of ova is strongly associated with appendiceal inflammation.
  • Ova release by female pinworms is a potential mechanism contributing to appendiceal obstruction and subsequent inflammation.

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