Histopathological changes | Grading system | Score |
---|---|---|
Chronic inflammation | Normal or number of mononuclear cells less than 5/high power field | 0 |
+ (mild): Some chronic inflammatory cells are localized in the superficial layer of the mucosa, but not more than 1/3 of the depth of the mucosa; | 1 | |
++ (moderate): A more dense accumulation of chronic inflammatory cells, but not exceeding 2/3 of the depth of the mucosa | 2 | |
+++ (severe): A dense accumulation of chronic inflammatory cells occupying the whole depth of the mucosa | 3 | |
Active chronic inflammation | Normal | 0 |
+ (mile): Few neutrophils in the lamina propria of the mucosa | 1 | |
++ (moderate): More neutrophils in the mucosal layer and between superficial epithelial cells, pit epithelial cells and glandular epithelial cells. | 2 | |
+++ (severe): A more dense infiltration of neutrophils, or abscess on pits can be seen in addition to what is seen in moderate activity. | 3 |