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Stages of fibrosis
| Description | Score | Definition |
|---|---|---|
| No fibrosis | 0 | Normal connective tissue |
| Portal fibrosis | 1 | Fibrous portal expansion |
| Periportal fibrosis | 2 | Periportal fibrosis with short septa extending into lobules or rare porto-portal septa (intact architecture) |
| Septal fibrosis | 3 | Fibrous septa reaching adjacent portal tracts and terminal hepatic venule (architecture distortion, but no obvious cirrhosis) |
| Cirrhosis | 4 | Diffuse nodular formation |
