Case #207 – July, 2007

Images captured from a trichrome stained smear were submitted to DPDx for diagnostic assistance. The smears were made from a polyvinyl-alcohol (PVA) preserved fecal specimen, but no other patient or specimen information was given. The submitter wanted confirmation for one parasite they had identified and was not sure of the other organism observed on the smear. Figures A-C show the objects in question under 1000× magnification. All images were cropped to the same dimensions by DPDx. What is your diagnosis? Based on what criteria? What valuable information would have been useful if provided?

Figure A

Figure B

Figure C

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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