Preserving the Mucosa to the Maximum Possible Extent for Endoscopic Submucosal Dissection of Subcircumferential Superficial Esophageal Carcinoma

Figure 1

(a) The appearance of subcircumferential superficial esophageal cancer on endoscopy with iodine staining. (b) A B2 or B3 vessel pattern [10, 11] was not recognized around the lesion on magnified narrow band imaging. (c) The boundary of the lesion was marked with a Flush knife. A sufficient volume of glycerol solution was injected into the submucosal layer of the mucosa that was to be preserved. (d) The first incision was made immediately above the markings on both sides of the lesion. (e) There is little damage to the remnant mucosa. The LB method allows for the precise preservation of the mucosa.

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