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?
C. Balantidium coli
Ans. A. Cystoisospora
- Comparison of Coccidian Parasites Causing Diarrhea in Immunocompromised Host.
|Sporulated oocyst||4-6 p.m, round contains four sporo-zoites|
|Acid fastness Detection limit > 50,000 oocyst/ml stool||Uniformly acid fast|
|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|