Endoscopy in inflammatory bowel disease when and why

Table 6 Rutgeerts scoring system to monitor post surgery Crohn’s disease activity

Score	Endoscopic features
i0	Absence of any lesions at anastomosis and in the neo terminal ileum
i1	Less than 5 aphthous ulcers (< 5 mm)
i2	More than 5 ulcers with normal intervening mucosa or large patchy lesions, or lesions confined to anastomosis (< 1 cm)
i3	Diffuse aphthous ileitis with diffuse inflammation of the ileal mucosa
i4	Diffuse ileitis with large ulcers, nodularity and stenosis.