Table 1.
Demographics, baseline, and chordoma characteristics for the total sample of 333 patients
| Variable | |
|---|---|
| Gender (n = 333) | |
| Male | 209 (62.8) |
| Female | 124 (37.2) |
| Age at surgery, years (n = 333) | 58±14 |
| Presentation | |
| Pain (n = 318) | 294 (92.5) |
| Myelopathy (n = 303) | 37 (12.2) |
| Cauda equina (n = 301) | 51 (16.9) |
| Preoperative function | |
| Frankel classification (n = 257) | |
| A | 3 (1.2) |
| B | 1 (0.4) |
| C | 10 (3.9) |
| D | 62 (24.1) |
| E | 181 (70.4) |
| AIS (n = 217) | |
| A | 3 (1.4) |
| B | 1 (0.5) |
| C | 8 (3.7) |
| D | 31 (14.3) |
| E | 174 (80.1) |
| Previous surgical resection (n = 332) | 65 (19.6) |
| Type of previous surgical resection (n = 50) | |
| Intralesional | 43 (86.0) |
| Marginal | 5 (10.0) |
| Wide | 2 (4.0) |
| Chordoma characteristics | |
| Spinal level (n = 333) | |
| Mobile | 166 (49.8) |
| Fixed | 167 (50.2) |
| Level involved (n = 219) | |
| Cervical | 54 (24.7) |
| Thoracic | 24 (11.0) |
| Lumbar | 78 (35.6) |
| Sacral | 63 (28.8) |
| Number of contiguous levels involved (n = 330) | |
| 1 | 110 (33.3) |
| 2–3 | 110 (33.3) |
| ≥4 | 110 (33.3) |
| Tumor diameter, cm | |
| Anterior-posterior | 5.5 (3.5, 9.5) |
| Left-right | 5.0 (3.3, 8.0) |
| Superior-inferior | 5.0 (3.3, 8.0) |
| Volume, cm3 (n = 265) | |
| <100 | 151 (57.0) |
| ≥100 | 114 (43.0) |
| Pathological fracture (n = 320) | 36 (11.3) |
| Diagnostic biopsy (n = 333) | |
| Open | 50 (15.0) |
| Trocar CT-guided | 165 (49.5) |
| Intraoperative | 61 (18.3) |
| Other | 57 (17.1) |
| Enneking grade (n = 312) | |
| I | 224 (71.8) |
| II | 88 (28.2) |
Values are given as number with (%), mean±SD, or as median (p25, p75).