Fig. 2.

 Endoscopic images of benign colorectal lesions selected for assessment. a White light and b NBI images of a 12-mm stage IIa + Is lesion with a regular contour and regular surface and vascular pattern. Histopathology showed a tubulovillous adenoma with low-grade dysplasia. c White light and d NBI images of an 8-mm stage IIa + IIc lesion with a regular contour and surface with a NICE I aspect with dark spots inside the crypts. Histopathology showed a sessile serrated adenoma/polyp without dysplasia.