Endoscopic diagnosis and treatment of superficial non-ampullary duodenal tumors

Figure 1 Endoscopic findings of a superficial non-ampullary duodenal tumor. A: A shallow depressed lesion (IIc) is observed in the second portion of the duodenum; B: Chromoendoscopy with indigo carmine; C: Magnifying endoscopy with narrow band imaging.

Figure 2 Endoscopic submucosal dissections for a superficial non-ampullary duodenal tumor. A: Protruded sessile type (Is) larger ≥ 20 mm in size; B: Mucosal incision around the lesion; C: Submucosal dissection of the lesion after mucosal incision; D: Mucosal defect after endoscopic submucosal dissection; E: Closure of mucosal defect using multiple endoclips; F: Resected specimen.