Heavy load of parasites in stool|| Stool microscopic examination|| Trichomonas hominis

Heavy load of parasites in stool || Stool microscopic examination|| Trichomonas hominis
Trichomonas hominis
Introduction
This flagellate is of cosmopolitan distribution. It is thought to be non-pathogenic although it has been
associated with diarrheic stools. It is the most commonly found flagellate next to Giardia lamblia
and Dientamoeba fragilis.
Morphology.
T. hominis has no cystic stage. The trophozoite measures from 5-15m in length by 7-10m in
width. The shape is pyriform and has an axostyle which runs from the nucleus down the center of
the body and extends from the end of the body and undulating membrane which extends the entire
length of the body and projects from the body like a free flagellum. It has 4 free flagella and a single
nucleus at the anterior end.
Laboratory Diagnosis
In a fresh stool, the flagellates move very rapidly in a jerky, non-directional manner. The axostyle
and undulating membrane are diagnostic. The flagellates are difficult to stain, however, the
axostyle can be seen on a stained preparation and is diagnostic.

#Parasites
#StoolR/E
#Trichomonas