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Table 1 Definition of endoscopic features of inflammation

From: Inter-observer agreement in the assessment of endoscopic findings in ulcerative colitis

Vascular pattern Changes in normal vascular pattern, decreased or absent
Erythema Reddening of the mucosa
Oedema Swollen mucosa
Granularity Micronodular mucosal surface
Blood in lumen Free intraluminal blood
Erosions Small superficial defect in the mucosa, of a white or yellow colour, with a flat edge
Ulcerations Compared to erosions, larger and deeper excavated fibrin covered lesions
Friability Bleeding mucosa either at contact or spontaneously