Fig. 4
From: Benign esophageal schwannoma: a brief overview and our experience with this rare tumor
Histopathological findings. a Histopathological findings revealed spindle-shaped cells (hematoxylin and eosin stain, ×200). b–f Immunohistochemical staining of tissue sections with nuclei counterstained with hematoxylin. b The tumor showed cytoplasmic expression of S-100 (×200). c The tumor was negative for KIT (×200). d The tumor was negative for CD34 (×200). Vascular endothelial cell of the tumor was immunostained. e The tumor was negative for Desmin (×200). f The tumor was negative for α-SMA (×200). Vascular smooth muscle cells of the tumor were immunostained