Submucosal tunneling endoscopic resection for tumors of the esophagogastric junction.

Background: For submucosal tumors (SMTs) originating from the muscularis propria (MP) layer of the esophagogastric junction (EGJ), submucosal tunneling endoscopic resection (STER) is now widely used, and it shows promise in overcoming the limitations of endoscopic submucosal dissection.

Aims: This study aimed to evaluate the efficacy and safety of the STER technique for treating SMTs of the EGJ originating from the MP layer.

Material And Methods: From October 2011 to February 2014, 20 patients were enrolled for STER surgery.