Modified submucosal tunneling endoscopic resection for submucosal tumors in the esophagus and gastric fundus near the cardia

摘要

Background and study aims Submucosal tunneling endoscopic resection with double opening (DO-STER) was developed by our group for the resection of submucosal tumors in the esophagus and gastric fundus near the cardia. This study aimed to provide a preliminary evaluation of feasibility and safety of DO-STER.