Endoscopic ultrasound features of gastric schwannomas with radiological correlation: A case series report

Figure 1 Computed tomography images showed rounded masses in the stomachs, with homogeneous (n = 3) or heterogeneous (n = 1) internal contrast enhancement. A: Contrast-enhanced computed tomography (CT) showed a solitary, exophytic, soft, internal homogeneous tissue mass (arrow) in the greater curvature of the stomach, the mass exhibited central ulceration (Case 3); B: CT during the portal venous phase of contrast enhancement showed a heterogeneous contrast enhanced mass (arrow) in the body of the stomach (Case 1).

Figure 2 Endoscopic ultrasonography of tumors. A: Endoscopic ultrasonography (EUS) showed a well-circumscribed heterogeneous hypoechoic mass with internal flake high-echo arising from the proper muscle layer of the stomach (case 3); B: EUS showed a round heterogeneous hypoechoic mass with marginal halo (arrow) (case 1).

Figure 3 Histological examinations showed that the lymphoid cuff (arrow) (A) and immunohistochemical evaluation revealed the spindle tumor cells stained positive for S-100 protein(B).