In spite of the accumulated evidences favoring the existence of Entamoeba histolytica as a complex of two species morphologically identical, but with different pathogenecity, Entamoeba histolytica, Schaudinn, 1903, and Entamoeba dispar, Brumpt, 1925 , the microscopical examination of faeces continuous to be the most widely used laboratory method for the diagnosis of intestinal amoebiasis.