Ultraslim endoscopy with flexible spectral imaging color enhancement for upper gastrointestinal neoplasms

Figure 1 A slightly depressed lesion with hyperemia was found on the surface of the posterior wall of the lower body of the stomach. The hyperemia of the lesion is highlighted and the boundary is more clearly visualized with flexible spectral imaging color enhancement (FICE). The visibility with FICE was graded 4. Endoscopic submucosal dissection (ESD) was performed for local complete resection of the moderately differentiated adenocarcinoma limited to within the mucosa. A: Conventional image with ultraslim endoscopy; B: Image with FICE: The hyperemia of the lesion is highlighted and the boundary is more clearly visualized with FICE (FICE 4); C: Conventional image with conventional esophagogastroduodenoscopy; D: Dissected section after ESD.