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Modified Rutgeerts Score12
| i0 | No lesions in the distal ileum |
|---|---|
| i1 | <5 aphthous lesions in the distal ileum |
| i2a | Lesions confined to the ileocolonic anastomosis (including anastomotic stenosis) |
| i2b | ≥5 aphthous lesions or larger lesions, with normal mucosa inbetween, in the neoterminal ileum (with or without anastomotic line) |
| i3 | Diffuse aphthous ileitis with diffusely inflamed mucosa |
| i4 | Large ulcers with diffuse mucosal inflammation or nodules or stenosis in the neoterminal ileum |
