Table 2.
Histological and immunohistochemical analysis of oral MM from dogs included in the study
| Threshold | Overall population | Group I | Group II | Group III | Group II+ III | |
|---|---|---|---|---|---|---|
| Ki67 a | < 19.5 | 18.5% (27/33)b | 9.1% (11/14)b | 18.2% (11/13)b | 40.0% (5/6)b | 25.0% (16/19)b | 
| ≥ 19.5 | 81.5% (27/33) | 90.9% (11/14) | 81.8% (11/13) | 60.0% (5/6) | 75.0% (16/19) | |
| Mitotic Index (MI) a | < 4/10 hpf | 3 (9.1%) | 3 (21.4%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 
| ≥ 4/10 hpf | 30 (90.9%) | 11 (78.6%) | 13 (100.0%) | 6 (100.0%) | 19 (100.0%) | |
| Nuclear Atypia (PLEOM) a | < 30.0% ≥ 30.0% | 14 (42.4%) 19 (57.6%) | 5 (35.7%) 9 (64.3%) | 5 (38.5%) 8 (61.5%) | 4 (66.7%) 2 (33.3%) | 9 (47.4%) 10 (52.6%) |