The pit-pattern of colorectal polyps as seen by magnification has been proved to be related to the histopathological type of the lesion. Here’s the Kudo classification of polyps and their correlation with pathology:
Also, here’s the NBI international colorectal endoscopic (NICE) classification:
Reference: Endoscopic prediction of deep submucosal invasive carcinoma: validation of the narrow-band imaging international colorectal endoscopic (NICE) classification. Gastrointest Endosc. 2013;78(4):625-32