Myoepithelioma of the gingiva. Report of a case.
Myoepithelioma is a rare form of salivary gland tumor composed entirely of myoepithelial cells. It represents about 1 to 1.5% of all salivary gland tumors and is most frequently located in the parotid. The authors present a case of myoepithelioma of the gingiva. The tumor presented a focal strong positivity for cytokeratins, a diffuse positivity for S-100 protein, and a rare focal positivity for actin. No duct formation was observed. Myoepithelioma must be differentiated from several benign and malignant epithelial and mesenchymal tumors.
Department of Oral Medicine and Pathology, Dental School, University of Chieti, Italy. apiattelli@unich.it
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Piattelli
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Fioroni
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C
Rubini
D005260:Female; D005887:Gingival Neoplasms / Q000473:pathology*; D006801:Humans; D008334:Mandible / Q000473:pathology; D008875:Middle Aged; D009208:Myoepithelioma / Q000473:pathology*; D012468:Salivary Gland Neoplasms / Q000473:pathology*; D012470:Salivary Glands, Minor / Q000473:pathology*