Dysplasia and invasive neoplasia scoring schema.

adysplasia score is assigned 0–4 for each section of large bowel, summed dysplasia are the sum of the scores in the individual segments (cecum, proximal colon, mid colon, distal colon).bnumber of invasive tumors is multiplied by size weight in each segment of the large bowel (cecum, proximal colon, mid colon, distal colon). Invasive tumor score is the sum of these values across the bowel).cdiagnostic criteria for hyperplasia, adenoma, carcinoma and to distinguish invasion vs. pseudoinvasion (herniation) after Boivin et al 2003.