Endoscopic treatment for early gastric cancer

Figure 1 Endoscopic submucosal dissection procedure. A: On the lesser curvature side of the antrum, a 1.2-cm type IIa + IIc early gastric cancer is observed; B: Indigo-carmine is sprayed along the extent of tumor to aid visualization. C: Marking outside the lesion; D: After injection of saline mixed with diluted epinephrine (1:100000) and indigo-carmine into the submucosal layer, circumferential mucosal pre-cutting is performed using a knife; E: After dissection of the submucosal layer, an artificial ulcer is observed; F: Fixation of the tissue specimen.