A. Right, The presented case is formed of sheets and lobules of eosinophilic granular cells lying in a fibrous stroma with scattered inactive-appearing odontogenic epithelial islands. According to recent WHO classification 2022, completely granular central odontogenic fibromas are sometimes referred to as granular cell odontogenic tumor but are best regarded as a subtype of odontogenic fibroma. The other subtypes of OdF are: amyloid subtype, ossifying subtype and OdF hybrid with giant cell granuloma.
B. Wrong, It is usually diagnosed by the presence of the granular cells within the epithelial islands replacing stellate reticulum-like cells.
C. Wrong, The presence of odontogenic islands excludes the probability of a metastatic lesion. Furthermore, there is no cellular atypia.
A. Right, The presented case is formed of sheets and lobules of eosinophilic granular cells lying in a fibrous stroma with scattered inactive-appearing odontogenic epithelial islands. According to recent WHO classification 2022, completely granular central odontogenic fibromas are sometimes referred to as granular cell odontogenic tumor but are best regarded as a subtype of odontogenic fibroma. The other subtypes of OdF are: amyloid subtype, ossifying subtype and OdF hybrid with giant cell granuloma.
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