Dental-floss traction-assisted endoscopic full-thickness resection of a gastrointestinal exophytic tumor: A case report

Exophytic gastrointestinal tumors, including gastrointestinal stromal tumors and leiomyomas, present unique technical challenges due to their predominantly outward growth pattern. Conventional endoscopic techniques, such as endoscopic mucosal resection and endoscopic submucosal dissection, often have limitations in achieving complete resection in these cases, and surgical approaches are therefore frequently required. We report a case of an exophytic gastric tumor successfully treated using dental floss-assisted traction combined with endoscopic full-thickness resection. This approach improved lesion exposure by enabling active repositioning of the extraluminal component into the gastric lumen, thereby enhancing procedural controllability. This case highlights a practical technical strategy for managing selected exophytic lesions and suggests that endoscopic resection may represent a feasible minimally invasive alternative in appropriately selected patients.