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Fibrosis staging in non-alcoholic fatty liver disease according to the Nonalcoholic Steatohepatitis Clinical Research Network Pathology Committee[18]
| Perisinusoidal or periportal fibrosis | 1 |
| Mild perisinusoidal fibrosis (zone 3) | 1A |
| Moderate perisinusoidal fibrosis (zone 3) | 1B |
| Portal/periportal fibrosis | 1C |
| Perisinusoidal and portal/periportal fibrosis | 2 |
| Bridging fibrosis | 3 |
| Cirrhosis | 4 |
