Table 1.
Definitions of the liver fibrosis stage (or score)
| Stage (score) | Fibrosis | Bridging fibrosis | Bridging fibrosis with nodule formation |
|---|---|---|---|
| Absent (0) | Absent | Absent | Absent |
| Mild (I) | Mild fibrous expansion (periportal or central) | Absent | Absent |
| Moderate (II) | Moderate fibrous expansion | Some bridging fibrosis (PP, CC, or PC) | Absent |
| Marked (III) | Marked fibrous expansion | Marked bridging fibrosis (PP, CC, or PC) | Absent |
| Extremely marked (IV) | Marked fibrous expansion | Marked bridging fibrosis (PP, CC, or PC) | Present |
CC, Central-central; PC, portal-central; PP, portal-portal.