Question
A known HIV patient on anti-retroviral therapy presented with diarrhea of six months duration. Stool microscopy was done in which 10-30 micrometer cysts were seen, Kinyoun stain was positive. What is the most likely diagnosis?
A. Cystoisospora
B. Cryptosporidium
C. Balantidium coli
D. Strongyloides
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Correct Answer » A Explanation |
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Ans. A. Cystoisospora
- Comparison of Coccidian Parasites Causing Diarrhea in Immunocompromised Host.
| Property | Crytosporidium |
| Infective form |
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| Sporulated oocyst | 4-6 p.m, round contains four sporo-zoites |
| Acid fastness Detection limit > 50,000 oocyst/ml stool | Uniformly acid fast |
| Property | Crytosporidium |
| Autofluorescence | No, but can be stained with fluores cent dye |
| Sporulation of the oocyst | Occurs inside the host cells (entero- cytes) |
| Diagnostic form | Sporulated oocyst |
| Sporulated oocyst | Seen |
| Treatment | Nitazoxanide |
| Outbreaks | Common |