ECTOPIC ENTEROBIUS VERMICULARIS INFESTATION; AN EXTREMELY RARE CAUSE OF MESENTERIC LYMPHADENOPATHY MIMICKING TUBERCULOUS LYMPHADENITIS

Authors

  • Summaya Zafar Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi http://orcid.org/0000-0002-8588-7549
  • Muhammad Usman Tariq Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi http://orcid.org/0000-0003-2963-9871
  • Zubair Ahmed Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Abstract

Enterobius vermicularis (EV) is a pinworm which commonly resides in the lumen of the intestinal tract and lays eggs on the perianal skin. However, rarely the worm can infest various other sites in the body and cases with infestation of such ectopic sites have been reported in literature. Rare cases of mesenteric lymph node involvement have also been reported. We report a case in a young male who presented with signs and symptoms of acute appendicitis. During surgery, enlarged mesenteric lymph nodes were identified. Histological examination revealed adult worm in the appendiceal lumen. Histological examination of mesenteric lymph node revealed degenerated worm surrounded by caseating chronic granulomatous inflammation. We conclude that EV infestation should be considered in the differential diagnosis of enlarged mesenteric lymph node with chronic granulomatous inflammation, especially in young patients and when accompanying bowel tissue also reveal the helminth.    Keywords: Enterobius vermicularis; Mesenteric Lymphadenopathy; Acute Appendicitis; Ectopic

Author Biographies

Summaya Zafar, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Resident year 1, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Muhammad Usman Tariq, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Senior Instructor, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Zubair Ahmed, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

Associate Professor, Section of Histopathology, Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi

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Published

2018-01-04

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