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Case #371 - May 2014

Stool specimens were collected from a 14-year-old refugee from Myanmar as part of a routine screening program. The stool was collected in 10% formalin and zinc PVA (Zn-PVA) and sent to the state health laboratory for ova-and-parasite (O&P) examination. Images of suspect parasites were captured and sent via email to the DPDx Team for diagnostic assistance. Figures A and B show two objects of interest that were observed by the attending microbiologist on a trichrome-stained slide prepared from Zn-PVA preserved stool. The measurements shown were included in the original telediagnosis submission. What is your diagnosis? Based on what criteria?

Figure A

Figure A

Figure B

Figure B

This case and images were kindly provided by the Kansas Health and Environment Laboratory, Topeka, KS.

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 educational resource designed for health professionals and laboratory scientists. For an overview including prevention, control, and treatment visit www.cdc.gov/parasites/.

Page last reviewed: August 24, 2016