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Comparison of histomorphological features MIB-1 LI score amongst recurrent and nonrecurrent adult chordomas
| Feature | Number of cases-13 |
|
|---|---|---|
| Recurrent(6) | Nonrecurrent(7) | |
| Cytologic atypia | 3/6 (50%, focal) | 0/7 (0%) |
| Necrosis | 2/6 (33.3%) | 3/7 (42.8%) |
| Mitoses/10 hpf | ||
| ≤2 | 4/6 (66.6%) | 6/7 (85.7%) |
| >2 | 2/6 (33.3%) | 1/7 (14.2%) |
| MIB-1 LI score 1 | 3/6 (50%) | 0/7 (0%) |
