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November, 2008
Case 239
A 50-year-old man went to his health care provider after a week of
intermittent diarrhea, cramps and nausea. Stool specimens were
collected over three consecutive days and sent to the local public
health laboratory for routine ova and parasite (O&P) work-up.
Figures A-C show objects observed at 1000x magnification
on a trichrome-stained slide prepared from the stool specimens.
The objects measured approximately 12 micrometers in length. What
is your diagnosis? Based on what criteria?
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A |
B |
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C |
Click
here for the answer to Case 239.
Case 240
A 45-year-old immigrant from Mexico was admitted to the hospital after
experiencing headaches, fever, pulmonary symptoms, and adenopathy.
Because of his travel history, a blood specimen was collected and sent
to Hematology for routine work-up, including blood parasitology.
Figures A and B show objects observed on a Giemsa-stained
thick smear of the blood specimen. Figures C and D
show objects observed on a Giemsa-stained thin smear of the blood
specimen. All images were captured at 1000x magnification.
The objects in the figures measured on average 180 micrometers in
length. What is your diagnosis? Based on what criteria?
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| A |
B |
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| C |
D |
Click
here for the answer to Case 240.
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.
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