Table 2. Criteria for histological scoring.

Score
0	No evidence of inflammation.
1	Low level of inflammation with scattered infiltrating mononuclear cells and neutrophils.
2	Moderate inflammation with multiple foci of neutrophils.
3	High degree of inflammation with increased vascular density and marked wall thickening.
4	Maximal severity of inflammation with transmural leukocyte infiltration and loss of goblet cells accompanied by ulceration.