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Histological grading of liver iron storage according Deugnier and Turlin.
| Hepatocytic iron score (HIS) | 0, 3, 6, 9, or 12 according to granules size in each Rappaport area | 0–36 |
| Sinusoidal iron score (SIS) | 0, 3, 6, 9, or 12 according to granules size in each Rappaport area | 0–12 |
| Portal iron score (PIS) | 0, 1, 2, 3, or 4 according to the percentage of iron overloaded macrophages, biliary cells, and vascular walls | 0–12 |
| Total iron score (TIS) | 0–60 |
According to Deugnier Y and Turlin B [20].
