Clinical | |
Stool frequency | |
Usual postoperative stool frequency | 0 |
1–2 stool/day >postoperative usual | 1 |
⩾3 stools/day >postoperative usual | 2 |
Rectal bleeding | |
None or rare | 0 |
Present daily | 1 |
Faecal urgency or abdominal cramps | |
None | 0 |
Occasional | 1 |
Usual | 2 |
Fever (temperature >37.8°C) | |
Absent | 0 |
Present | 1 |
| |
Endoscopic inflammation | |
Oedema | 1 |
Granularity | 1 |
Friability | 1 |
Loss of vascular pattern | 1 |
Mucous exudate | 1 |
Ulceration | 1 |
| |
Acute histological inflammation | |
Polymorphonuclear leucocyte infiltration | |
Mild | 1 |
Moderate+crypt abscess | 2 |
Severe+crypt abscess | 3 |
Ulceration per low power field (mean) | |
<25% | 1 |
25–50% | 2 |
>50% | 3 |