Figure 3. Histopathological assessment of the lesion under microscopy. (A) Biphasic pattern composed of hypercellular (Antoni A, arrow) and hypocellular (Antoni B, arrowhead) components that are arranged in intersecting fascicles. Blood vessels have thickened hyalinized walls (asterisks) (hematoxylin and eosin [H&E] stain, ×10) (B) Nuclear palisading is prominent (asterisks). Formation of Verocay bodies which consists of 2 layers of palisading spindle cells with an anuclear zone in between (arrows). There was no evidence of mitosis, necrosis, nuclear atypia, or pleomorphism (H&E stain, ×20). (C) Immunohistochemical staining for S100 was strongly and diffusely positive in the lesional cells [S100 stain, ×40].