Table 1.
Patient characteristics
| Characteristics | Data |
|---|---|
| Sex (n) | |
| Male | 36 |
| Female | 31 |
| Age (years) | |
| Median | 68 |
| Range | 12–88 |
| KPS score (n) | |
| <70 | 15 |
| ≥70 | 52 |
| Extracranial metastases (n) | |
| Absent | 23 |
| Present | 44 |
| Primary tumor (n) | |
| Lung | 55 |
| Breast | 5 |
| Other | 7 |
| Number of BM (n) | |
| Median | 5 |
| Range | 1–73 |
| Maximum diameter of BM (cm) | |
| Median | 1.2 |
| Range | 0.4–3.0 |
| Number and maximum diameter of BM (n) | |
| ≥4 and >1 cm | 29 |
| ≥4 and ≤1 cm | 18 |
| <4 and >1 cm | 16 |
| <4 and ≤1 cm | 4 |
| Total volume of BM (cm3) | |
| Median | 1.0 |
| Range | 0.1–14.1 |
| Previous radiotherapy (n) | |
| WBRT | 6 |
| SRS | 15 |
| WBRT+SRS | 3 |
| No previous radiotherapy | 43 |
| Targeted therapy (n) | |
| No | 37 |
| Yes | 30 |
KPS = Karnofsky performance status, BM = brain metastases, WBRT = whole brain radiation therapy, SRS = stereotactic radiosurgery.