Table 1.

Pathological grading of liver injury.

Grade	Portal Area and Surrounding Area	Hepatic Lobule
0	No inflammation	No inflammation
1	Portal inflammation	Degeneration and few necrotic foci
2	Mild detrital necrosis	Degeneration, focal necrosis
3	Moderate detrital necrosis	Degeneration or necrosis, or bridge necrosis
4	Severe detrital necrosis	Bridge necrosis wide range, involving multiple lobules, leaflet structure disorder