Table 1.
Patient characteristics of 219 patients and 316 lesions
| n | % | Median (range) | |
|---|---|---|---|
| Gender | |||
| Female | 90 | 41.1 | |
| Male | 129 | 58.9 | |
| Age at RT [years] | 68 (6–91) | ||
| Primary tumor type | |||
| NSLC | 56 | 17.7 | |
| CRC | 93 | 29.4 | |
| Melanoma | 11 | 3.5 | |
| Breast Cancer | 20 | 6.3 | |
| Others | 136 | 43.0 | |
| Number of pulmonary METs | |||
| ≤ 3 | 203 | 64.2 | |
| > 3 | 113 | 35.8 | |
| MET location | |||
| Central | 34 | 10.8 | |
| Upper lobe | 130 | 41.1 | |
| Middle lobe | 23 | 7.3 | |
| Lower lobe | 129 | 40.8 | |
| Laterality | |||
| Right | 169 | 53.5 | |
| Left | 145 | 45.9 | |
| Bilateral | 2 | 0.6 | |
| Extra thoracic MET | |||
| Yes | 131 | 41.5 | |
| No | 185 | 58.5 | |
| KPS [%] at RT | |||
| 100 | 8 | 2.5 | |
| 90 | 141 | 44.6 | |
| 80 | 137 | 43.4 | |
| 70 | 22 | 7.0 | |
| 60 | 7 | 2.2 | |
| 50 | 1 | 0.3 | |
| Prior thorax RT | |||
| Yes | 87 | 27.5 | |
| No | 229 | 72.5 | |
| CHT between MET diagnosis and SBRT | |||
| Yes | 58 | 18.4 | |
| No | 258 | 81.6 | |
| Time primary diagnosis until MET diagnosis [months] | 30.9 (0–265.9) | ||
| Time MET diagnosis until RT [months] | 1.7 (0–127.3) | ||
| PTV [ml] | 28.8 (2.0–517.0) | ||
| GTV [ml] | 5.4 (0.1–217.6) | ||
NSCLC Non-small cell lung cancer, CRC Colorectal carcinoma, KPS Karnofsky performance score, RT Radiotherapy, CHT Chemotherapy, MET Metastasis, PTV Planning target volume, GTV Gross tumor volume