Table 2.
Immunoreactivity of osteocalcin and alkaline phosphatase in osteosarcoma and other primary bone tumour.
| Tumor type | Total no. | OCN (n = 50) | ALP (n = 50) | ||
|---|---|---|---|---|---|
| Positive | Negative | Positive | negative | ||
| Conventional OSA | 25 | 17 | 8 | 24 | 1 |
| Chondroblastic | 4 | 2 | 2 | 4 | 0 |
| Fibroblastic | 1 | 0 | 1 | 0 | 1 |
| NOS | 20 | 15 | 5 | 20 | 0 |
| OPBT | 25 | 16 | 9 | 5 | 20 |
| Angiosarcoma | 2 | 0 | 2 | 0 | 2 |
| Chondrosarcoma | 13 | 11 | 2 | 5 | 8 |
| Chordoma | 3 | 1 | 2 | 0 | 3 |
| Ewing's sarcoma | 3 | 3 | 0 | 0 | 3 |
| Low grade fibromyxoid sarcoma | 1 | 0 | 1 | 0 | 1 |
| Malignant giant cell tumor | 1 | 0 | 1 | 0 | 1 |
| Plasmacytoma | 2 | 1 | 1 | 0 | 2 |
|
| |||||
| p value | p = 0.061 | p < 0.0001 | |||
OCN, Osteocalcin; ALP, Alkaline Phosphatase; OSA, Osteosarcoma; NOS, not otherwise specified; OPBT, Other Primary Bone Tumor.