Endoscopic full-thickness resection with local injection into tissue outside the capsule of a gastrointestinal stromal tumor

Endoscopic full-thickness resection with local injection into tissue outside the capsule of a gastrointestinal stromal tumor E-Videos Fig. 1 Endoscopic submucosal dissection (ESD) for early gastric cancer overlying a gastro- intestinal stromal tumor (GIST).a Early gastric cancer lesion in the lesser curvature of the gastric body.b Early gastric cancer lesion after marking.c Post-ESD mucosal defect after resection of early gastric cancer.The underlying submucosal tumor is visible in the defect (yellow arrow).d Endoscopic ultrasound showed the GIST underneath the mucosal defect.Video 1 R0 resection achieved by endoscopic full-thickness resection with local injection into tissue away from a gastrointestinal stromal tumor.