Myoepithelial adenoma
      The smears show monomorphous spindle-shaped or plasmacytoid cells, clean  background, no or just very little normal salivary gland epithelium. The  chondromyxoid stroma is not present (if present, the tumor is called  'mixed tumor'). The nuclei are round or elongated. No mitotic figures are present. Metachromatic fragments may be  found, but they do not correspond to the large amount of metachromatic stroma of  the mixed tumor!