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Case #521 - August, 2020

As part of a refugee screening program, a young child had a fecal ova and parasite (O & P) examination which included a formalin-ethyl acetate (FEA) fecal concentration. Objects shown in Figures AC were detected in low numbers on a wet mount preparation and measured about 75 micrometers on average.  What is your diagnosis?  Based on what morphologic features?

Figure A

Figure A

Figure B

Figure B

Figure C

Figure C

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: December 9, 2020