Table 3.
SRS Outcomes.a,b
| Characteristic | Statistic |
|---|---|
| Radiographic follow-up, months | 9 [1-86] |
| Clinical follow-up, months | 15 [2-95] |
| Death in follow-up | 14 (78) |
| Median overall survival, months | 16 |
| Radiographic failure | 19 (48) |
| Median time to failure, months | 14 |
| Adjusted pain reliefc | 11 (35) |
| Median time to relief, months | NR |
| Unadjusted pain reliefc | 24 (77) |
| Median time to relief, months | 1 |
| Adjusted pain failure | 9 (23) |
| Median time to failure, months | NR |
| Unadjusted pain failure | 18 (45) |
| Median time to failure, months | 10 |
| Neurologic deficit reliefd | 12 (86) |
| Median time to relief, months | 8 |
| Post-SRS complications | |
| Pain flare | 4 (10) |
| Vertebral fracturee | 3 (8) |
| Failure requiring retreatment | 10 (25) |
| SRS | 8 (20) |
| Surgery | 4 (10) |
| EBRT | 1 (3) |
| Characteristics of radiographic failure | |
| In-field and adjacent | 10 (53) |
| In-field only | 9 (47) |
| Site of failure | |
| Vertebral body | 12 (63) |
| Epidural space | 9 (47) |
| Paraspinal | 3 (16) |
| Neural foramen | 3 (16) |
| Posterior elements | 2 (11) |
Abbreviations: EBRT, external beam radiotherapy; NR, not reported; SRS, stereotactic radiosurgery.
aValues are presented as number (percentage) or median [range].
bSubtotals may exceed 100% if treatment sites had, for example, multiple sites of failure.
cAmong patients with pain at consult.
dAmong patients with neurologic deficit(s) at consult.
eNew or progressed fracture.