Descriptor (score most severe lesions) | Likert scale anchor points | Definition |
Vascular pattern | Normal (1) | Normal vascular pattern with arborisation of capillaries clearly defined, or with blurring or patchy loss of capillary margins |
Patchy obliteration (2) | Patchy obliteration of vascular pattern | |
Obliterated (3) | Complete obliteration of vascular pattern | |
Bleeding | None (1) | No visible blood |
Mucosal (2) | Some spots or streaks of coagulated blood on the surface of the mucosa ahead of the scope, which can be washed away | |
Luminal mild (3) | Some free liquid blood in the lumen | |
Luminal moderate or severe (4) | Frank blood in the lumen ahead of endoscope or visible oozing from mucosa after washing intraluminal blood, or visible oozing from a haemorrhagic mucosa | |
Erosions and ulcers | None (1) | Normal mucosa, no visible erosions or ulcers |
Erosions (2) | Tiny (≤ 5mm) defects in the mucosa, of a white or yellow colour with a flat edge | |
Superficial ulcer (3) | Larger (>5 mm) defects in the mucosa, which are discrete fibrin-covered ulcers in comparison with erosions, but remain superficial | |
Deep ulcer (4) | Deeper excavated defects in the mucosa, with a slightly raised edge |
Additional files indicating the levels of the UCEIS are available online only.