Efficacy and safety of endoscopic resection in treatment of small gastric stromal tumors: A state-of-the-art review

Figure 4 Submucosal-tunneling endoscopic resection treatment of gastric stromal tumor. A: Gastric stromal tumor (GST) at the esophagogastric junction; B: Submucosal injection was initiated by needle in the esophagus about 5 cm away from the GST; C and D: The esophageal mucosa was cut open to establish a submucosal tunnel to the tumor; E: An IT knife was used to separate the root of the tumor; F: Heat coagulation and hemostatic therapy on wound surface after tumor resection; G: The opening of the esophageal tunnel was sealed with titanium clamps; H: Complete resection of the tumor.