Table 1.
Characteristics of canine OS tissues (n = 40) used for this study
| Parameter | n | % |
|---|---|---|
| Histological subtypea | ||
| OB + FB | 12 | 30 |
| OB + TL | 5 | 12.5 |
| OB + CB + FB | 7 | 17.5 |
| OB + FB + TL | 2 | 5 |
| OB | 14 | 35 |
| Histological grade | ||
| High | 28 | 70 |
| Medium-low | 12 | 30 |
| Necrosis | ||
| < 50% (low) | 12 | 30 |
| > 50% (high) | 28 | 70 |
| Sex | ||
| Female | 14 | 35 |
| Male | 26 | 65 |
| Neuter status | ||
| Intact | 22 | 55 |
| Neutered | 18 | 45 |
| Location of primary tumor | ||
| Extraskeletal | 1 | 2.5 |
| Femur | 1 | 2.5 |
| Humerus | 8 | 20 |
| Mandible/maxilla | 3 | 7.5 |
| Radius/ulna | 14 | 35 |
| Rib | 2 | 5 |
| Scapula | 3 | 7.5 |
| Tibia/fibula/metatarsus | 8 | 20 |
a CB chondroblastic, FB fibroblastic, OB osteoblastic, TL telangiectic