Open AccessOdontogenic fibroma amyloid-variant: a typical case and brief considerations about mimickers
Author(s) -
Gisele de Rezende,
Laura Bandiera,
Valentina Motta,
Emanuela Bonoldi
Publication year - 2021
Publication title -
pathologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 18
eISSN - 1591-951X
pISSN - 0031-2983
DOI - 10.32074/1591-951x-152
Subject(s) - pathology , connective tissue , differential diagnosis , fibroma , medicine , lesion , odontogenic tumor , amyloid (mycology)
The World Health Organization's (WHO) updated classification of head and neck tumors (2017) defined odontogenic fibroma as a rare neoplasm. In this report, we describe an unusual, typical and rare variant of a central odontogenic fibroma with diffuse amyloid-like protein stromal deposition, and discuss the differential diagnosis with other entities. Radiographically, this lesion presented as a well-defined radiolucency of the mandible, partially cystic. Histologically, the lesion showed a unique confluence of odontogenic epithelial rests in a moderately cellular connective tissue. Immunohistochemical staining highlighted a mixture of benign epithelial and Langerhans cells within connective tissue with diffuse amyloid-like stromal deposition. The importance of recognizing this variant of odontogenic fibroma is due to its benign prognosis and clinical course.