Fig. 2

The major phases of DFC-ESD procedure. A Several dots were marked outside the margin of the target lesions. B The solution was injected into submucosal layer to create submucosal cushion. C The lesion was circumferential incision completely. D The endoscopic clip with the dental floss was deployed at the edge of mucosa for the traction system establishment. E Distinct submucosal layer exposure was achieved in virtue of dental floss clip traction. F The lesion was resected successfully without any iatrogenic adverse events