Case #156 – May, 2005

A 25-year-old man living in South America became ill with intestinal cramping and watery diarrhea. Stool specimens were collected and an O & P exam was ordered by his physician. The lab performed an FEA concentration on the sample, prepared wet mounts, and examined them using UV fluorescence microscopy. Images were captured and submitted to DPDx/CDC. Figures A and B were taken at 400× magnification. 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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