Case #169 - December, 2005
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A 28-year-old man complained of gastrointestinal pain and bloating. At the request of his health care provider, he submitted a fecal specimen preserved in low viscosity polyvinyl alcohol (LV-PVA). A trichrome stained smear was made from some of the specimen. Figure A shows an object, measuring 10 to 12 micrometers at its greatest diameter, that was seen in low numbers on the slide. What is your diagnosis? Based on what criteria?
Figure A
Case Answer
The object shown was a pollen grain that may be mistaken for a Taenia egg; this case was reported as No Parasites Found (NPF).
More on: Artifacts
Images presented in the monthly case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.
DPDx is an education resource designed for health professionals and laboratory scientists. For an overview including prevention and control visit www.cdc.gov/parasites/.
- Page last reviewed: August 24, 2016
- Page last updated: August 24, 2016
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- Global Health – Division of Parasitic Diseases and Malaria
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