Table 1.

Colitis total inflammation score

score	0	1	2	3	4
Area involved	0%	1-10%	10-25%	25-50%	> 50%
follicles	Normal (0-1)	Minimal (2-3)	Mild (4-5)	Moderate (6-7)	Severe (> 7)
edema	Absent	Minimal	Mild	Moderate	Severe
fibrosis	Absent	Minimal	Mild	Moderate	Severe
Erosion/ulceration	0%	1-10%	10-25%	25-50%	> 50%
Crypt loss	0%	1-10%	10-25%	25-50%	> 50%
granulocytes	Normal	Minimal increase	Mild increase	Moderate increase	Severe increase
Mononucl. cells	Normal	Minimal increase	Mild increase	Moderate increase	Severe increase

The total inflammation score was determined by the average score of the following criteria: area involved, the number of follicle aggregates, oedema, fibrosis, hyperplasia, erosion/ulceration, crypt loss and infiltration of granulocytes and mononuclear cells.