Algorithm on endoscopic management of gastric GISTs in our hospital. GIST, gastrointestinal stromal tumor; EUS, endoscopic ultrasonography; MP, muscularis propria; ESD, endoscopic submucosal dissection; ESE, endoscopic submucosal excavation; STER, submucosal tunneling endoscopic resection; EFR, endoscopic full-thickness resection; LECS, laparoscopic and endoscopic cooperative surgery.