An effective and safe gastric endoscopic submucosal dissection in the right lateral position using an inverted overtube

Figure 3 Conventional endoscopic submucosal dissection in left lateral position when pull (A) and push (B) the endoscope. A: The electric knife is located vertically toward the gastric mucosa of the lower body of the lesser curvature of the anterior wall in the conventional left lateral position; B: The resected line is located farther from the endoscope, making it more difficult to approach.