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Osteoid producing primary lesion at morphologic and biologic interface.

Fibroosseous gnathic lesions comprise a wide spectrum of diseases. Many of the entities have overlapping features. A pediatric case is encountered with a complex clinicopathologic profile. Although radiographically the lesion appears benign but on histopathological examination it possesses features of osteoid producing aggressive neoplasm. This paper highlights the unusual histologic features existing within the spectrum of fibroosseous lesions and discusses relevant clinicopathologic correlations.