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Case #526 – October, 2020

During a field study in Cambodia, stool ova and parasite (O&P) examinations were performed on participants in rural villages. Unusual eggs were found in the formalin-ethyl acetate concentrated stool specimen of one middle-aged woman. Shown in figures AC are the eggs, which measured an average of 53 x 32 µm. What is your diagnosis? What does this indicate about the patient’s diet, and are any follow-up actions necessary?

Figure A

Figure A

Figure B

Figure B

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.

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/.