Case #430 – October, 2016
A 25-year-old refugee from Myanmar had a stool specimen collected for routine ova-and-parasite examination as part of a post-arrival screening. Figures A–D show what was found in moderate numbers on a fecal smear stained with Kinyoun’s modified acid-fast stain. The objects measured 20 micrometers on average. What is your diagnosis? Based on what criteria?

Figure A

Figure B

Figure C

Figure D
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.