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