FC scoring system

FC ScoreDescription
0No FCs present
1Scattered individual FCs present within the tissue (1–5 cells)
2Clusters of FCs present, no inflammation
3Clusters of FCs present with inflammation, or coalescing clusters of FCs without inflammation
4Coalescing clusters of FCs with inflammation
Tissue damage multiplier
 1No tissue damage present
 2Presence of degeneration or necrosis