RESUMO
Odontoameloblastoma is a rare neoplasm of odontogenic origin in which there is proliferation of tissue of the odontogenic apparatus in an unrestrained pattern including complete morphodifferentiation, apposition and even calcification. Till date, around 20 cases have fulfilled the histologic criteria of the current World Health Organization histologic classification of odontogenic tumors. Review of literature from 1944 to 2011 reveals only four reported cases in the anterior mandible. Here, we report a case of odontoameloblastoma in the anterior mandible in which plexiform ameloblastoma was associated with compound odontoma forming an unusual combination.
El odontoameloblastoma es una neoplasia rara, de origen odontogénico en el que existe proliferación tisular del aparato odontogénico en un patrón sin restricciones, incluyendo morfodiferenciación completa, aposición e incluso calcificación. Hasta la fecha, alrededor de 20 casos han cumplido todos los criterios histológicos de la actual clasificación de tumores odontogénicos de la OMS. La revisión de la literatura desde 1944 hasta el año 2011 revela sólo cuatro casos reportados en el sector mandibular anterior. Se presenta un caso de odontoameloblastoma en la region anterior mandibular donde un ameloblastoma plexiforme se asoció con un odontoma complejo formando una combinación inusual.
RESUMO
Odontoameloblastoma (OA) is a very rare mixed odontogenic neoplasm, characterized by the simultaneous occurrence of an ameloblastoma and a compound or complex odontoma in the same tumor mass. To date, less than 50 cases of OA and/or ameloblastic odontoma have been reported in the English dental literature. This neoplasm was called ameloblastic odontoma. The term OA was included in the 1971 WHO classification. In this study, we present two cases of OA, which we hope will contribute to the awareness and knowledge of surgeons regarding the existence of this odontogenic tumor so that patients having it may be treated and followed-up properly.