Table 2.
Patients’ Characteristics and Tumors and Treatment Factors Between the 2 Groups which are Based on Tumor Necrosis at 90% and 50% Cutoff
| Demographics | Total patients (n=40) | ≥ 90% Necrosis (%) (n=15) | < 90% Necrosis (%) (n=25) | > 50% Necrosis (%) (n=30) | ≤ 50% Necrosis (%) (n=10) |
|---|---|---|---|---|---|
| Age | |||||
| < 20 | 20 | 11 (74) | 9 (36) | 18 (60) | 2 (20) |
| 20-40 | 8 | 2 (13) | 6 (24) | 4 (13) | 4 (40) |
| > 40 | 12 | 2 (13) | 10 (40) | 8 (27) | 4 (40) |
| Sex | |||||
| Male | 22 | 9 (60) | 13 (52) | 17 (57) | 5 (50) |
| Female | 18 | 6 (40) | 12 (48) | 13 (43) | 5 (50) |
| Location | |||||
| Lower Limb | 32 | 10 (67) | 22 (88) | 23 (77) | 9 (90) |
| Upper Limb | 7 | 4 (27) | 3 (12) | 6 (20) | 1 (10) |
| Pelvis | 1 | 1 (6) | 0 (0) | 1 (3) | 0 (0) |
| Histological subtype | |||||
| Conventional | 34 | 13 (87) | 21 (84) | 24 (80) | 10 (100) |
| Telangiectatic | 3 | 2 (13) | 1 (4) | 3 (10) | 0 (0) |
| Parosteal | 1 | 0 (0) | 1 (4) | 1 (3) | 0 (0) |
| Periosteal | 1 | 0 (0) | 1 (4) | 1 (3) | 0 (0) |
| Giant cell rich | 1 | 0 (0) | 1 (4) | 1 (3) | 0 (0) |
| Metastasis at Diagnosis | |||||
| Yes | 7 | 3 (20) | 4 (16) | 5 (17) | 2 (20) |
| No | 33 | 12 (80) | 21 (84) | 25 (83) | 8 (80) |