Table 1 Intestinal mucosal damage grading score.
Grade | Histological characteristics |
|---|---|
Grade 0 | Normal mucosal villi |
Grade 1 | Subepithelial Gruenhagen's space (oedema), usually at the apex of the villus |
Grade 2 | Extension of the subepithelial space with moderate lifting of epithelial layer from the lamina propria |
Grade 3 | Massive epithelial lifting down the sides of villi. A few tips may be denuded |
Grade 4 | Denuded villi with lamina propria and dilated capillaries exposed |
Grade 5 | Digestion and disintegration of lamina propria; haemorrhage and ulceration |