Usefulness of analyzing endoscopic features in identifying the colorectal serrated sessile lesions with and without dysplasia

Figure 1 Colorectal sessile serrated lesions characterized by colonoscopy demonstrate. A: White light endoscopy of the sessile serrated lesion (SSL) surface covered with mucus cap; B: White light endoscopy of the SSL with pale color and cloud-like surface; C: White light endoscopy of the SSL-dysplasia (SSL-D) against a pale color background with localized reddish mucosa and a depression visible in the center of the cloud-like surface; D: In the endoscopic blue laser imaging (BLI) mode, the dilated crypt of the SSL appears as black spots (as shown by the arrow); E: In the endoscopic magnified BLI mode, microvascular varicose is visible on the surface of the SSL-D (as shown by arrows); F: In endoscopic magnified BLI mode, the dilated crypt of the SSL-D appears as Pit IIIL type in the background of Pit II-O.