Table 2. Pathological scoring criteria for small intestine.

Score	Mucosal Damage
5	Villi loss with digestion and disintegration of lamina propria; hemorrhage and ulceration.
0	Normal mucosal villi.
1	Subepithelial Gruenhagen’s space developed and usually at the apex of the villus; often with capillary congestion.
2	Extension of the subepithelial space with moderate lifting of epithelial layer from the lamina propria, also with central chylous duct dilatation.
3	Villi fall and a few tips may be denuded. The lamina propria is markedly edematous.
4	Denuded villi with lamina propria and dilated capillaries exposed. Epithelial cell denaturation and necrosis. Increased cellularity of lamina propria may be noted.