Entamoeba coli Cysts in feces

Entamoeba coli Cysts in feces (iodine stain, oil immersion). In these two cysts, five or six of the eight nuclei are visible in the plane of focus.     Reference: http://ruby.fgcu.edu

Some Helminth Ova

1- hook worm ova 2- Trichuris trichiura ova 3-ascaris lumbricoide ova

Ascaris lumbricoides egg

artifacts in stool

Iodine stain. Left, an Entamoeba coli trophozoite. Right, this artefact is morphologically like a trophozoite, but the inside “nucleus” is actually superimposed fecal debris.    

Summary of Occult Blood Testing Interference

   

Blastocystis hominis cyst-like forms in wet mounts

Blastocystis hominis appear as spherical to oval cyst-like structures. They vary widely in size (5 to 30 µm; usual range 8 to 10 µm), and typically consist of a central body, or ...

Fasciola hepatica egg

Eggs of Fasciola hepatica are broadly ellipsoidal, operculated and measure 130-150 µm long by 60-90 µm wide. The eggs are unembryonated when passed in feces. The eggs of F. hepatica ...

Stool Analysis Artifacts

Plant origin artifact resemble hookworm egg

  This object may be mistaken for thin shelled hookworm eggs or decorticated Ascaris eggs. The irregular contour of the outer membrane and the general appearance should suggest ...

Fasciolopsis buski egg

  Eggs of Fasciolopsis buski are broadly ellipsoidal, operculated and measure 130-150 µm long by 60-90 µm wide. The eggs are unembryonated when passed in feces. The eggs ...

Capillaria philippinensis eggs

  Capillaria philippinensis eggs are 35 to 45 µm in length by 20-25 µm in width. They have two inconspicuous polar prominences and a striated shell. Eggs are unembryonated when ...

Pollen grains artifact resemble Taenia eggs

Careful study of the inner mass reveals its lack of typical features of an oncosphere normally seen in Taenia eggs (embryonic hooklets, etc.). Absence of the radial striation is ...
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