Table 1.
Demographics.
| Parameter | n, % |
|---|---|
| Age (n = 81) | |
| Range | 12–82 |
| Median | 64 |
| Mean ± SD | 58 ± 17.4 |
| Sex (n = 81) | |
| Female | 34, 42% |
| Male | 47, 58% |
| Localization (n = 81) | |
| Skull | 30, 37% |
| Sacrum | 27, 33.3% |
| Mobile spine | 24, 29.7% |
| Recurrence (n = 81) | |
| Yes | 52, 64.2% |
| No | 29, 35.8% |
| Multiple recurrences (n = 80) | |
| Yes | 24, 30% |
| No | 56, 70% |
| Tumor size (in mm **) | |
| Range | 19–144 |
| Median | 43 |
| Mean ± SD | 50.6 ± 27.5 |
| Principal treatment at diagnosis (n = 85) | |
| Surgical | 72, 84.7% |
| Radiotherapy | 10, 11.8% |
| Palliative | 3, 3.5% |
| Adjuvant therapy (n = 40) | |
| Radiotherapy | 36, 90% |
| Surgical | 3, 7.5% |
| immunotherapy | 1, 2.5% |
| Follow-up (n = 81) | |
| Range | 2–264 |
| Median | 60 |
| Mean ± SD | 69.5 ± 59.5 |
| Patient status (n = 81) | |
| Alive | 66, 81.5% |
| Dead * | 15, 18.5% |
| Overall survival (n = 81) | |
| Range | 2–264 |
| Median (log-rank) | Not reached |
* = only disease-associated deaths. n denotes the number of cases with available data. ** = size was available for only 38 cases, while tumor volume was not available.