Diagnosis of subepithelial tumors in the upper gastrointestinal tract by endoscopic ultrasonography

Figure 6 Endoscopic and endoscopic ultrasonography finding of gastrointestinal stromal tumor. A: Endoscopic view of subepithelial lesion of the posterior side of the greater curvature of the gastric body; B: Endoscopic ultrasonography shows hypoechoic, homogeneous 2 cm tumor developed within the 4th layer (low risk gastrointestinal stromal tumor of the stomach); C: 35 mm hypoechoic, heterogeneous, lobulated submucosal lesion with exogastric growth developed within the 4th layer (high risk gastrointestinal stromal tumor of the stomach).