Fig. 4.

a Endoscopy reveals a sessile polyp of the distal ascending colon classified 01 s (Paris Classification [6]); histological outcome was tubulovillous adenoma with severe dysplasia. b Strain elastography shows the polyp, which appears inhomogeneous, classified 2BAR (mix of colors, green > blue > red). a1 Endoscopy shows a polyp of the descending colon (granular laterally spreading tumor); histological outcome was tubulovillous adenoma with mild dysplasia. b1 Strain elastography shows the polyp, which appears relatively homogeneous, classified 2BR (green > red)