Case #434 – December, 2016

A patient had two stool specimens submitted for ova and parasite (O & P) examination. Smears were made, stained with trichrome, and examined.  Eosinophils and Charcot-Leyden crystals were observed in both specimens.  Also observed, at 1000x oil magnification, were the objects in Figures A and B.  They measured 10 µm in diameter on average. What is your diagnosis?  Based on what criteria?

Figure A

Figure B

This case and images were kindly provided by the North Dakota Department of Public Health.

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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