Remission endpoints in ulcerative colitis: A systematic review

Table 2 The ulcerative colitis endoscopic index of severity descriptors (maximum score = 8, Scoring is based on the most severe area)

Descriptors	Likert Scale anchor point	Definition
Vascular pattern	0: Normal 1: Patchy obliteration 2: Complete obliteration	Normal vascular pattern with arborisation of capillaries clearly defined, or with blurring or patchy loss of capillary margins Complete obliteration
Bleeding	0: None 1: Mucosa 2: Luminal mild 3: Luminal moderate or severe	Some spots or streaks of coagulated blood on the surface of the mucosa Some free liquid blood in the lumen Frank blood in the lumen ahead of endoscope or visible oozing from a haemorrhagic mucosa
Erosions and Ulcers	0: None 1: Erosions	None Tiny < 5 mm defects in the mucosa, of white or yellow colour with a flat edge
	2: Superficial ulcer	Larger > 5 mm defect in the mucosa, which are discrete fibrin-covered ulcers in comparison with erosions, but remain superficial
	3: Deep ulcer	Deeper excavated defects in the mucosa, with a slightly raised edge