Table 1.
Descriptive statistics of the patient population (N = 215)
| Sex, n (%) | |
| Female | 84 (39.1) |
| Male | 131 (60.9) |
| Age in years, median (range) | 65 (24 to 89) |
| Preoperative KPS, n (%) | |
| ≥ 70 | 150 (69.8) |
| Resection, n (%) | |
| Yes | 176 (81.9) |
| Preoperative tumor volume, median (range) | 34.3 (0.4 to 243.5) |
| Residual tumor volume in mLa (n = 206), median (range) | |
| Resection (n = 167) | 1.63 (0 to 68.1) |
| Biopsy (n = 39) | 35.99 (0.97 to 144.38) |
| Residual tumor volume groupeda (n = 206), n (%) | |
| 0–5 mL | 120 (58.3) |
| 5.1–10 mL | 26 (12.6) |
| 10.1–15 mL | 15 (7.3) |
| 15.1–20 mL | 7 (3.4) |
| > 20 mL | 38 (18.4) |
| Radiochemotherapy, n (%) | |
| Yes | 165 (76.7) |
| Survival in days, median (range) | 374 (8 to 2924) |
| Survival grouped, n (%) | |
| < 6 months | 52 (24.2) |
| 6–24 months | 122 (56.7) |
| > 24 months | 41 (19.1) |
aResidual tumor volume was calculated as contrast enhancing components only in patients treated with resection. Residual tumor volume was set equal to preoperative tumor volume (including necrotic parts) in patients treated with biopsy only