Fig. 3. Endoscopic procedures. Submucosal tumor (arrow) close to the esophagogastric junction before resection (A), submucosal injection of 0.9% saline solution mixed with epinephrine (B), formation of submucosal incision at the distal margin (arrow) of the tumor using a needle-knife (C), partially circumferential full-thickness incision of the gastric wall using a diathermic electrosurgical (insulation-tipped) knife, visible peritoneal cavity, and padded gauze (arrow) (D), and after resection and closure, showing a well-approximated gastric mucosa (arrows) (E, F).