Giant Brunner's gland hyperplasia of the duodenum successfully resected en bloc by endoscopic mucosal resection: A case report

Figure 2 A depression with a mucosal defect in the lesion. A: In a portion of the lesion, a depression with a mucosal defect was seen; B: Magnified narrow-band imaging observation of this depressed area revealed structures resembling small round glandular openings and band-like septum-like structures suggestive of fibrous components.