TABLE 2.
Tumor Histology and Enneking Classification (3-Month Follow-up Cohort)
| Tumor histology (pathologist report), n (%) | N = 308 |
|---|---|
| Chordoma | 115 (37.3) |
| Chondrosarcoma | 27 (8.8) |
| Osteosarcoma | 5 (1.6) |
| Ewing's sarcoma | 11 (3.6) |
| Hemangiopericytoma | 2 (0.6) |
| Giant cell tumor | 21 (6.8) |
| Osteoid osteoma | 16 (5.2) |
| Osteoblastoma | 17 (5.5) |
| Hemangioma | 11 (3.6) |
| Osteochondroma | 2 (0.6) |
| Aneurysmal bone cyst | 3 (1.0) |
| Fibrous dysplasia | 4 (1.3) |
| Chondroblastoma | 1 (0.3) |
| Schwannoma | 27 (8.8) |
| Neurofibroma | 2 (0.6) |
| Meningioma | 4 (1.3) |
| Malignant peripheral nerve sheath tumor (MPNST) | 1 (0.3) |
| Other malignant bone tumor | 9 (2.9) |
| Other benign bone tumor | 4 (1.3) |
| Other malignant soft tissue tumor | 20 (6.5) |
| Other benign soft tissue tumor | 6 (1.9) |
| Enneking classification, n (%) | N = 308 |
|---|---|
| Benign—S1 | 13 (4.2) |
| Benign—S2 | 34 (11.0) |
| Benign—S3 | 67 (21.8) |
| Malignant—Ia | 11 (3.6) |
| Malignant—Ib | 105 (34.1) |
| Malignant—IIa | 20 (6.5) |
| Malignant—IIb | 46 (14.9) |
| Malignant—IIIa | 6 (1.9) |
| Malignant—IIIb | 6 (1.9) |