Table 2.

Endoscopic Mayo score.

Mucosal appearance at endoscopy	Normal or inactive disease	0
	Mild disease (erythema, decreased vascular pattern, mild friability)	+1
	Moderate disease (marked erythema, absent vascular pattern, friability, erosions)	+2
	Severe disease (spontaneous bleeding, ulceration)	+3

Adapted from Sturm et al.13