Clinicopathological features and treatment of gastrointestinal schwannomas

Figure 2 Endoscopic images depicting submucosal mass of gastrointestinal tract schwannomas. A: Hemispherical tumor from the middle section of the esophagus; B: Discoid tumor with central depression from the upper curvature of the gastric body; C: Spherical tumor from the sigmoid colon; D: Wide-based spherical tumor with superficial erosion from the lower curvature of the gastric body.