Adalimumab in prevention of postoperative recurrence of Crohn's disease in high-risk patients

Table 1 Rutgeerts and magnetic resonance score for classification of postoperative recurrence in Crohn's disease

Rutgeerts score	Description	MR score	Description
i0	No lesions	MR0	No findings
i1	Less than 5 aphthous lesions	MR1	Minor mucosal irregularities: Slight wall thickening Slight mural contrast enhancement No stenosis
i2	More than 5 aphthous lesions with normal mucosa between the lesions or skip areas or larger lesions or lesions confined to ileocolonic anastomosis
i3	Diffuse aphthous ileitis with diffusely-inflamed mucosa	MR2	Major mucosal abnormalities: Distinct bowel wall thickening Distinct mural contrast enhancement Low grade stenosis without prestenotic dilatation
i4	Diffuse inflammation with already large ulcers, nodules and/or narrowing	MR3	Same finding as MR 2 plus: Transmural edema with T2w signal increase and contrast enhancement of the perienteric fat High grade stenosis without prestenotic dilatation Extramural complications (fistula, abscess, conglomeration of bowel loops)

MR: Magnetic resonance; MR0-MR3: A 4-point MR-enteroclysis-based score; i0-i4: A 5-point score to measure the presence and severity of endoscopic lesions in the neoterminal ileum and anastomosis.