Fig. 2

Endoscopic full-thickness resection (EFTR) procedure for a submucosal tumor in the posterior wall of the bulb-descending junction. a The submucosal tumor had a superficial ulcer located in the posterior wall of the bulb-descending junction. b The clip was placed on the endoscope and introduced to catch the lesion. c The clip was deployed, creating a pseudopolyp of the lesion above the closed clip. d The target lesion was resected en bloc above the clip using an electrosurgical snare. e Resection defect. f En bloc resected specimen