Table 3.

Intestinal fibrosis score

Grade	Criteria for inflammation score
Fibrosis
0	No increase in collagen deposition
1	Increased collagen deposition in submucosa and mucosa
2	Increased collagen deposition in muscularis mucosa, submucosa, and mucosa; thickening, disorganization of the muscularis mucosa.
3	Increased collagen deposition in muscularis propria, muscularis mucosa, submucosa, and mucosa
4	Increased collagen deposition throughout all layers including serosa
Percentage
0	0–25% of section
1	25–50% of section
2	50–75% of section
3	75–100% of section