Diagnosis of gastric intraepithelial neoplasia by narrow-band imaging and confocal laser endomicroscopy

Figure 4 Routine endoscopy and narrow-band imaging images of low and high grade gastric intraepithelial neoplasia. A: Low grade intraepithelial neoplasias present an irregular surface and microvascular pattern with a clear demarcation line; B: High grade gastric intraepithelial neoplasias present the irregular surface pattern and microvascular pattern with a demarcation line. Few areas show as flat (absent microsurface pattern) with an obscured demarcation line.