Table 2. Baseline demographic information and preoperative characteristics.
| Characteristics | All patients (n = 14) | En bloc (n = 6) | Intralesional (n = 8) | p Value |
|---|---|---|---|---|
| Patient characteristics | ||||
| Age at diagnosis, y (SEM) | 40 (4) | 40 (4) | 40 (6) | 0.9382 |
| Sex, female, n (%) | 8 (57) | 4 (67) | 4 (50) | 0.5329 |
| Symptoms/signs at presentation, n (%) | ||||
| Back pain | 13 (93) | 6 (100) | 7 (88) | 0.3688 |
| Myelopathy | 3 (21) | 0 (0) | 3 (38) | 0.0906 |
| Cauda equina | 4 (29) | 2 (33) | 2 (25) | 0.7327 |
| Duration of preoperative symptoms, mo (SEM) | 10 (3) | 8 (3) | 13 (5) | 0.4315 |
| Preoperative Frankel class | 0.2801 | |||
| D | 7 (50) | 2 (33) | 5 (63) | |
| E | 7 (50) | 4 (67) | 3 (38) | |
| History of spine tumor surgery, n (%) | 1 (7) | 0 (0) | 1 (13) | 0.3688 |
| History of chemotherapy, n (%) | 1 (7) | 1 (17) | 0 (0) | 0.2308 |
| History of radiotherapy, n (%) | 0 (0) | 0 (0) | 0 (0) | – |
| Preoperative embolization, n (%) | 8 (57) | 4 (67) | 4 (50) | 0.5329 |
| Tumor characteristics | ||||
| Spine level, n (%) | ||||
| Cervical | 2 (14) | 0 (0) | 2 (25) | 0.1859 |
| Thoracic | 2 (14) | 1 (17) | 1 (13) | 0.8255 |
| Lumbar | 4 (29) | 3 (50) | 1 (13) | 0.1243 |
| Sacral | 6 (43) | 2 (33) | 4 (50) | 0.5329 |
| Pathologic fracture, n (%) | 6 (43) | 2 (33) | 4 (50) | 0.5329 |
| Preoperative SINS score, mean (SEM) | 10 (1) | 11 (1) | 10 (1) | 0.5855 |
| Enneking classification stage | 0.8721 | |||
| II | 5 (36) | 2 (33) | 3 (38) | |
| III | 9 (64) | 4 (67) | 5 (63) | |
| Tumor volume, cm3 (SEM) | 81.7 (45.2) | 142.1 (104.2) | 36.3 (11.8) | 0.2626 |
Abbreviations: SINS, Spinal Instability Neoplastic Score; SEM, standard error of the mean.