Role of narrow band imaging in endoscopic submucosal dissection

Figure 11 Differentiation of benignity and malignancy of a small depressed lesion. A: A solitary erosion was present in the antrum on the small curvature side. Differentiation of benignity and malignancy by conventional observation was difficult; B: The gland structure on the erosion surface was apparently different from the surrounding region, and a few abnormal micro blood vessels with an abnormal distribution and irregular width were present in this region; C: The lesion was an intramucosal moderately differentiated adenocarcinoma on pathological examination after endoscopic submucosal dissection. HE, original magnification, × 100 (left), original magnification, × 400 (right).