Fig. 4From: Robot-assisted enucleation of large dumbbell-shaped esophageal schwannoma: a case report(a) The specimen exhibited a well-encapsulated and dumbbell-shaped lesion that measured 70 × 60 × 40 mm. (b) Histopathological examination revealed compact bundles of spindle cells (asterisk) (Hematoxylin and eosinstain, original magnification, × 200). (c) Immunohistochemical staining showed positivity for S-100 protein (asterisk) (× 100)Back to article page