Table 2.
Treatment results and outcome in 27 patients after two-session GKS for large brain metastases
| Characteristic | Percentage points | No. of patients |
|---|---|---|
| 1-Year local control rate | 61 | |
| 1-Year overall survival rate | 45 | |
| 1-Year rate of prevention of neurological death | 78 | |
| Mean KPS (95 % CI) | ||
| At first GKS | 61 (57–71) | |
| At second GKS | 80 (74–85) | |
| Best in follow-up | 85 (78–91) | |
| Local recurrence | 5 | |
| Symptomatic radiation injury | 1 | |
| Distant new metastases | 11 | |
| Subsequent treatment | ||
| Craniotomy for local recurrence | 2 | |
| GKS for local recurrence | 3 | |
| GKS for new metastases | 11 | |
| Cause of death | ||
| Systemic disease progression | 12 | |
| CNS progression | 5 | |
GKS Gamma Knife surgery, CI confidence interval, KPS Karnofsky performance scale, CNS central nervous system