Endoscopic treatments for small gastric subepithelial tumors originating from muscularis propria layer

Figure 3 Submucosal tunneling endoscopic resection. A: A subepithelial tumor was found in the gastric fundus; B, C: Creating a submucosal tunnel to the tumor and then excavating the tumor from the muscularis propria layer via the submucosal tunnel; D: The omentum could be seen through a small gastric wall after tumor removal; E: The gastric mucosa was intact; F: The entrance of the submucosal tunnel was closed with several clips after tumor removal.