Pathology: intra-osseous schwannoma

Areas of hyper- ("Antoni A") and hypo- ("Antoni B") cellularity
Spindle cells with loose fascicular pattern
Eosinophilic cytoplasm
Ovoid hyperchromatic nuclei with mild atypia and occasional palisading; inconspicuous mitotic activity
Ectatic blood vessels with hyalinized walls
IHC: S100, SOX10
PMID: 21677538

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Bone Tumours

Other Mesenchymal Tumours of Bone