A histopathological and immunohistochemical analysis of ameloblastic fibrodentinoma

Abstract

Ameloblastic ibrodentinoma (AFD) is considered a mixed odontogenic tumor that is characterized by conserved epithelial and ectomesenchymal neoplastic components. AFD is composed of long narrow cords and islands of odontogenic epithelium; the epithelial strands lie in a myxoid cell-rich ectomesenchymal tissue with stellate-shaped ibroblasts that exhibit long slender cytoplasmic extensions that resemble dental papilla. he lesions show the presence of dysplastic dentin. Although AFD is a rare entity and its very existence is not completely accepted, based on the extent of histodiferentiation, it is considered to represent a stage between ameloblastic ibroma and ameloblastic ibroodontoma.his study aimed to provide a histopathological and immunohistochemical characterization of this infrequent tumor. A large panel of antibodies including amelogenin, Ck 19, calretinin, syndecan-1, E-cadherin, MSH2, histone H3, and Ki-67 was used to illustrate the nature of the tumor. (AU)