Case #221 – February, 2008

A survey was conducted to determine the prevalence of geohelminth infections in school-age children living in Haiti. The laboratory aspect of the survey consisted of processing stool specimens which were collected in 10% formalin. Per protocol, the processing included performing an FEA (formalin-ethyl acetate) concentration and examination of a wet mount. The following images show what was found in one of the specimens. All images (Figures AC) were taken at 200x magnification; Figures A and B are of the same field but at different focal planes. The lemon or barrel-shaped objects measured 50-55 micrometers in length. What is your diagnosis? Based on what criteria?

Images presented in the DPDx case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.

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