Underwater endoscopic mucosal resection for neoplasms in the pyloric ring of the stomach: Four case reports

Figure 1 Underwater endoscopic mucosal resection in the first case. A: Endoscopic view of the polyp in the pyloric ring; B: Filling water around the lesion; C: Snaring of the lesion in water; D: Endoscopic view of the resected area after endoscopic resection; E: The head portion of the resected polyp; F: The stalk portion of the resected polyp.

Figure 2 Underwater endoscopic mucosal resection in the third case. A: Endoscopic view of the neoplasm in the pyloric ring; B: Endoscopic view of the neoplasm in the pyloric ring under narrow-band imaging; C: Snaring of the lesion in water under narrow-band imaging; D: Endoscopic view of the resected area after endoscopic resection under narrow-band imaging; E: Endoscopic view of the resected area after endoscopic resection.