This organism is excreted in feces as sporulated oocysts and…

This organism is excreted in feces as sporulated oocysts and is the primary cause of recreational waterborne disease outbreaks due to its protective outer shell, which is tolerant to chlorine disinfection.  On wet mounts and trichrome stains, it may be confused with yeast due to its small size so confirmation should be accomplished using a confirmatory method, such as modified Acid-Fast staining or direct fluorescent antibody microscopy.

The cyst in this trichrome stain is from a fecal sample of a…

The cyst in this trichrome stain is from a fecal sample of an asymptomatic patient. The cyst has no evident nuclear peripheral chromatin, a large karyosome, and coarsely granular cytoplasm containing an obvious glycogen vacuole.   What would be the appropriate laboratory report?