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Table 1 Histologic score for fibrotic CD

From: A novel collagen area fraction index to quantitatively assess bowel fibrosis in patients with Crohn’s disease

0No fibrosis
1Minimal fibrosis in submucosa or subserosa
2Increased submucosal fibrosis, septa into muscularis propria
3Septa through muscularis propria, increase in subserosal collagen
4Significant transmural scar, marked subserosal collagen
  1. CD Crohn’s disease