Table 1.
Baseline characteristics
| Localized | Metastatic | Both | |
|---|---|---|---|
| Median age (range), years | 36.5 (20–56) | 40 (19–76) | 38 (19–76) |
| Gender, n | |||
| Female | 6 | 4 | 10 |
| Male | 4 | 4 | 8 |
| Performance status, n | |||
| 0–1 | 10 | 4 | 14 |
| 2 or higher | 0 | 3 | 3 |
| Not available | 0 | 1 | 1 |
| Stage, n | |||
| I | 0 | 0 | 0 |
| II | 9 | 0 | 9 |
| III | 0 | 0 | 0 |
| IV | 0 | 8 | 8 |
| Not available | 1 | 0 | 1 |
| Tissue of origin, n | |||
| Osseous | 5 | 3 | 8 |
| Nonosseous | 5 | 5 | 10 |
| Site of primary, n | |||
| Vertebral column | 2 | 0 | 2 |
| Pelvic ring | 0 | 1 | 1 |
| Maxillary sinus | 1 | 0 | 1 |
| Thoracic wall | 1 | 1 | 2 |
| Abdominal wall | 1 | 0 | 1 |
| Paraspinal soft tissues | 0 | 1 | 1 |
| Gluteal, groin, pelvic soft tissues | 1 | 3 | 4 |
| Peritoneum/retroperitoneum | 1 | 1 | 2 |
| Extremities | 3 | 1 | 4 |
| Total | 10 | 8 | 18 |