Plasmacytoid myoepithelioma of the palate. Report of one case and review of the literature.

INTRODUCTION: Myoepithelioma is a benign neoplasm of salivary glands, represents 1.5 % of all salivary glands neoplasm. The plasmacytoid myoepithelioma from palate salivary glands is considered as a rare entity, at date it has been reported 14 cases. It is present one case of plasmacytoid myoepithelioma of palate. CASE REPORT: A Hispanic female of 28 years old presented a not-ulcerate, painless ovoid swelling at left side of hard palate with a one year and a half of evolution. An excisional biopsy was done. The sample was fixed at 10% buffer formalin, embedded in paraffin, cuts at 5 micron and stained with H-E. Microscopically, the lesion was composed by myoepithelial neoplastic cells characterized by a round ovoid silhouette, an eccentric nuclei of dense chromatin and eosinophilic cytoplasm. In some myoepithelial neoplastic cells were identifies intranuclear cytoplasmatic inclusions. The lesion was analysed with immunohistochemical technique using the follow antibodies: vimentin, citokeratin AE1/AE3, S100 protein and actin muscle specific. We observe positive immunoreactivity against vimentin, citokeratin, S100 protein and actin muscle specific. A diagnosis of plasmacytoid myoephitelioma of palate salivary glands was done. Our findings supports the suggestion about plasmacytoid myoepithelioma is an independent entity. The histological diagnostic parameters of plasmacytoid myoepithelioma versus pleomorphic adenoma are discussed.

Plasmacytoid myoepithelioma of the palate. Report of one case and review of the literature

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Introduction: Myoepithelioma is a benign neoplasm of salivary glands, represents 1.5 % of all salivary glands neoplasm.The plasmacytoid myoepithelioma from palate salivary glands is considered as a rare entity, at date it has been reported 14 cases. It is present one case of plasmacytoid myoepithelioma of palate. Case report: A Hispanic female of 28 years old presented a not-ulcerate, painless ovoid swelling at left side of hard palate with a one year and a half of evolution.An excisional biopsy was done. The sample was fixed at 10% buffer formalin, embedded in paraffin, cuts at 5 ì and stained with H-E. Microscopically, the lesion was composed by myoepithelial neoplastic cells characterized by a round ovoid silhouette, an eccentric nuclei of dense chromatin and eosinophilic cytoplasm. In some myoepithelial neoplastic cells were identifies intranuclear cytoplasmatic inclusions. The lesion was analysed with immunohistochemical technique using the follow antibodies: vimentin, citokeratin AE1/AE3, S100 protein and actin muscle specific. We observepositive immunoreactivity against vimentin, citokeratin, S100 protein and actin muscle specific. A diagnosis of plasmacytoid myoephitelioma of palate salivary glands was done. Our findings supports the suggestion about plasmacytoid myoepithelioma is an independent entity. The histological diagnostic parameters of plasmacytoid myoepithelioma versus pleomorphic adenoma are discussed (AU)

Uterine leiomyosarcoma metastatic to the oral cavity / Uterine leiomyosrcoma metastatic to the oral cavity

El leiomiosarcoma es una neoplasia maligna rara que se presenta pocas veces en la cavidad bucal. Esto se debe a que en la boca, el músculo liso solamente se encuentra en las paredes de los vasos sanguíneos y las papilas circunvaladas de la lengua. En nuestra revisión de la literatura, solamente encontramos publicados dos casos de leiomiosarcoma uterino con metástasis a los tejidos bucales. El objetivo de este trabajo es informar sobre el tercer caso de liosmiosarcoma uterino con metástasis a boca, yeyuno y pulmones, que apareció en una paciente de 52 años, tratada previamente por medio de histerectomía y radiación, que murió seis meses después de aparecer la metástasis en boca. Se discuten algunos aspectos relacionados con el papel del cirujano dentista, el cirujano maxilofacial y el especialista en patología bucal en el diangnóstico y manejo de esta entidad