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Myoepithelial adenoma

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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!

Small basaloid cells in sheets or  in single cell arrangement. There are some basal membrane like metachromatic, thick „patches”’ in the background, usually closely related to the cells (A). Some smears show the presence of capillaries. The nuclei are ovoid, bean shaped, some of the having intranuclear (pseudo)inclusions (arrow ).
Small basaloid cells in sheets or  in single cell arrangement. There are some basal membrane like metachromatic, thick „patches”’ in the background, usually closely related to the cells (A). Some smears show the presence of capillaries. The nuclei are ovoid, bean shaped, some of the having intranuclear (pseudo)inclusions (arrow ).
Small basaloid cells in sheets or  in single cell arrangement. There are some basal membrane like metachromatic, thick „patches”’ in the background, usually closely related to the cells (A). Some smears show the presence of capillaries. The nuclei are ovoid, bean shaped, some of the having intranuclear (pseudo)inclusions (arrow ).
Small basaloid cells in sheets or  in single cell arrangement. There are some basal membrane like metachromatic, thick „patches”’ in the background, usually closely related to the cells (A). Some smears show the presence of capillaries. The nuclei are ovoid, bean shaped, some of the having intranuclear (pseudo)inclusions (arrow ).