Case #196 – January, 2007

A missionary traveled to various countries in sub-Saharan Africa for one year. He went to his physician complaining of abdominal pain and occasional diarrhea which he experienced since his return to the U.S. He reported he swam in various lakes while he was abroad. An ova and parasite (O & P) stool examination revealed objects, measuring 135 µm, like the one shown in Figures A and B (200×). The images show the same area of the slide but two separate focal planes. What is your diagnosis? Based on what criteria?


Figure A


Figure B

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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