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Case #338 - December, 2012

A 42-year-old pig farmer presented to his local medical facility with intermittent diarrhea and abdominal cramping. A stool specimen was collected in 10% formalin for laboratory testing. Figures A and C were captured at 200x magnification and show what was found in high numbers. Figures B, D, and E show a higher magnification (400x) of the same objects. What is your diagnosis? Based on what criteria?

Figure A

Figure A

Figure B

Figure B

Figure C

Figure C

Figure D

Figure D

Figure E

Figure E

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