Case #187 – September, 2006

A 35-year-old man was seen by a physician for diarrhea and abdominal pain. An ova and parasites (O & P) examination was ordered, along with other tests. The objects in Figures A and B were seen on a modified acid-fast stained stool smear and measured 8 to 10 µm. The images were taken at 1000× magnification. What is your diagnosis? Based on what criteria?

Figure A

Image B

The images in this case were kindly contributed by the Georgia Public Health Laboratory.

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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