Table 2.

Colonic Histological Scoring System

Histological feature	Score	Description
Epithelial damage	0	None
	1	0%–5% loss of epithelium
	2	5%–10% loss of epithelium
	3	Over 10% loss of epithelium
Loss of crypts	0	None
	1	0%–10% loss of crypts
	2	10%–20% loss of crypts
	3	Over 20% loss of crypts
Infiltration of inflammatory cells	0	None
	1	Mild (10%)
	2	Moderate (25%)
	3	Severe (40%)