Case #158 – June, 2005

A 42-year-old man complained of diarrhea for 2 weeks following an international assignment that included travel to countries in Southeast Asia and the Indian subcontinent. He explained to his physician that his symptoms began shortly before he returned to the United States. An ova and parasites (O & P) examination was ordered, and Figures A-D show what was observed. Figures A and B are from a wet mount stained with Lugol’s iodine, and Figures C and D are from a trichrome stained fecal smear. The objects ranged in size from 20-25 micrometers. What is your diagnosis? Based on what criteria?

Figure A

Figure B

Figure C

Figure D

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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