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Back| Grade | Description |
|---|---|
| Grade I | Hematoma: Subcapsular, non-expanding, less than 10% surface area; Laceration: Capsular tear, parenchymal depth less than 1 cm |
| Grade II | Hematoma: Subcapsular, non-expanding, 10%-50% surface area, intraparenchymal hematoma less than 10 cm in diameter; Laceration: Parenchymal depth 1-3 cm, length less than 10 cm |
| Grade III | Hematoma: Subcapsular, more than 50% surface area or expanding; ruptured subcapsular or parenchymal hematoma; intraparenchymal hematoma more than 10 cm or expanding; Laceration: Parenchymal depth more than 3 cm |
| Grade IV | Parenchymal disruption: Involving 25%-75% of a hepatic lobe or 1-3 Couinaud segments within a single lobe |
| Grade V | Laceration: Parenchymal disruption involving more than 75% of a hepatic lobe or more than 3 Couinaud segments within a single lobe; Vascular: Juxtahepatic venous injuries, i.e., retrohepatic vena cava/central major hepatic veins |
| Grade VI | Vascular: Hepatic avulsion |
Explanation
For multiple liver injuries, the injury grade increases by one level.
