Laparoscopic-assisted endoscopic full-thickness resection of a large gastric schwannoma: A case report

Figure 3 Specimen after surgery, hematoxylin and eosin-stained pathological sections, and immunohistochemistry. A: The resected tumor; B and C: The tumor comprises intertwined bundles of spindle cells with tapered nuclei; mitotic figures are rare. Lymphocyte infiltration is observed in the tumor tissue, and a characteristic peripheral lymphoid cuff is present (B: 4 × C: 20 ×); D-I: Immunohistochemical staining of the gastric mass confirming a gastric schwannoma with positive staining for S-100 protein (I) and negative staining for α-smooth muscle actin (D), DOG-1 (E), CD34 (F), CD117 (G), and desmin (H).