Table 1. Patient characteristics and primary treatment of brain metastases.

KPS: Karnofsky performance status, NSCLC: non-small cell lung cancer, WBRT: whole-brain radiotherapy, SRS: stereotactic radiosurgery, RT: radiotherapy 

	Short interval <36 months	Interval at least 36 months
Median age (years), range	65, 28-90	74, 56-83
Median number of metastases	1, 1-4	1, 1-4
Median KPS	80, 50-100	80, 70-90
Female gender	38 (46%)	7 (100%)
NSCLC	51 (62%)	1 (14%)
Breast cancer	4 (5%)	2 (29%)
Malignant melanoma	4 (5%)	2 (29%)
Kidney cancer	4 (5%)	1 (14%)
Colorectal cancer	6 (7%)	1 (14%)
Others	13 (16%)	0
Neurosurgical resection	32 (39%)	5 (71%)
Primary WBRT	31 (38%)	0
SRS and other RT	19 (23%)	2 (29%)