Digestive Diseases and Sciences

, Volume 41, Issue 9, pp 1811–1813

Dientamoeba fragilis An unusual intestinal pathogen

  • William P. Butler
Case Report

DOI: 10.1007/BF02088750

Cite this article as:
Butler, W.P. Digest Dis Sci (1996) 41: 1811. doi:10.1007/BF02088750


This is a case report of a gastrointestinal infection caused byDientamoeba fragilis. It is a flagellate protozoan that is an uncommon etiology of gastrointestinal disease. Primarily characterized by diarrhea and abdominal pain, other symptoms such as flatulence, nausea, vomiting, fatigue, malaise, and weight loss occur. Diagnosis is made using multiple fresh stool samples that are preserved and permanently stained looking for the typical binucleate trophozoite. Since there is a distinct association withEnterobius vermicularis (possibly the mode of protozoan transmission), the human pinworm is also sought. Treatment of choice consists of diiodohydroxyquin in adults and metronidazole in children.

Key words

diarrheaabdominal painprotozoaDientamoeba fragilis

Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • William P. Butler
    • 1
  1. 1.From the Department of SurgeryMacDill AFB
  2. 2.San Antonio