Table of Contents Author Guidelines Submit a Manuscript
Case Reports in Gastrointestinal Medicine
Volume 2013, Article ID 706197, 4 pages
Case Report

Pinworm Infestation Mimicking Crohns’ Disease

1Medical School at the Faculty of Health Sciences, Linkoping University, 581 85 Linkoping, Sweden
2Linköping University Hospital, Clinic for Pathology, Linkoping University Hospital, 581 85 Linkoping, Sweden
3Gastroenterology and Hepatology, Department of Clinical and Experimental Medicine, Linköping University, Linkoping University Hospital, 581 85 Linkoping, Sweden

Received 24 January 2013; Accepted 13 February 2013

Academic Editors: S. Kikuchi, G. Kouraklis, V. Lorenzo-Zúñiga, and Y. Moriwaki

Copyright © 2013 Joel Johansson et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We here report a case of a young man who presented to his general practitioner with diarrhea. Inflammatory bowel disease was suspected and a colonoscopy showed aphthous lesions suggestive of Crohns’ disease but biopsies revealed eggs of Enterobius vermicularis. When treated for this parasite, his symptoms were alleviated and a followup colonoscopy revealed a normal colon and distal ileum. Enterobius vermicularis is the most common parasite worldwide and has been attributed with many different presentations and pathologies. It is therefore necessary to maintain vigilance, even in high-income countries, in order to diagnose patients with one of the many atypical presentations of pinworms.