Table 6.

Histopathologic Colitis Scoring System

Group	Description	Score
Enterocytes
Normal	Rare epithelial lymphocytes	0
Mild	Intraepithelial neutrophils	1
Moderate	Mucosal necrosis and/or luminal pus	2
Severe	Necrosis muscularis mucosa	3
Epithelial hyperplasia
Normal		0
Mild		1
Moderate		2
Pseudopolyps		3
Lamina propria mononuclear infiltrate
Normal	1 small lymphoid aggregate	0
Slightly increased	>1 small aggregate	1
Markedly increased	Large aggregates and/or greatly increased single cells	2
Lamina propria neutrophil infiltrate
Normal		0
Slightly increased		1
Markedly increased		2