Table I.
Demographics and disease-related characteristics for the 21 patients with metastatic osteosarcoma at presentation.
| Clinical variables | Patient no. (%) (n=21) |
|---|---|
| Age, years | |
| <18 | 10 (48.0) |
| ≥18 | 11 (52.0) |
| Gender | |
| Male | 12 (57.0) |
| Female | 9 (43.0) |
| Primary tumor location | |
| Femur | 11 (52.0) |
| Tibia | 8 (38.0) |
| Humerous | 2 (10.0) |
| Histological subtypes | |
| Osteoblastic | 6 (29.0) |
| Osteosarcoma-NOS | 8 (38.0) |
| Other | 7 (33.0) |
| Treatment of primary tumor | |
| LSS | 11 (52.0) |
| Amputation | 4 (19.0) |
| No surgery | 6 (29.0) |
| Metastatic sites | |
| Lung | 15 (72.0) |
| Lung and extrapulmonary | 3 (14.0) |
| Extrapulmonary | 3 (14.0) |
| Treatment | |
| PM and chemotherapy | 4 (19.0) |
| Chemotherapy alone | 15 (71.0) |
| BSC alone | 2 (10.0) |
NOS, not otherwise specified; LSS, limb salvage surgery; PM, pulmonary metastasectomy; BSC, best supportive care.