Table 1. Patients’ characteristics.
Characteristics of 55 patients treated with proton therapy. Each red solid circle indicates one case, or as specified. All patients were offered cytotoxic PT with the aim to achieve long-term local control of OSA. Therefore, the four cases treated to or treated with metastatic disease at the time of treatment were retained in the analysis.
| Patients' characteristics | n = 55 | (%) |
|---|---|---|
| Age (median) | 26.9 (2–76) | |
| Male:Female ratio | 5:6 | |
| Disease Location | ||
| Head (cranium) | 22 | 40 |
| Cervical spine | 5 | 9 |
| Thoracic spine | 8 | 15 |
| Lumbar spine | 4 | 7 |
| Pelvis or sacrum | 13 | 24 |
| Femur | 1 | 2 |
| Hip | 1 | 2 |
| Rib/chest wall | 1 | 2 |
| Stage | ||
| I / II / IV | 12 / 38 / 5 | 22 / 69 / 9 |
| Histology | ||
| Osteoblastic/Chondroblastic | 29 / 21 | 53 / 38 |
| Grade | ||
| 1, 2, 3 | 12 / 23 / 20 | 22 / 42 / 36 |
| Extent of Surgery | ||
| No surgery | 12 | 22 |
| Partially resected/debulking | 19 | 35 |
| Grossly resected with positive margins | 24 | 43 |
| Chemotherapy | ||
| No systemic treatment | 5 | 9 |
| Some chemotherapy | 31 | 56 |
| Intensive chemotherapy | 19 | 35 |
| Primary presentation | 35 | 64 |
| Relapse after curative surgery | 17 | 31 |
| Metastatic site | 3 | 5 |