Table 1.

Patient characteristics

Characteristic	No. of patients (%)
Age
< 60	5 (25)
≥ 60	15 (75)
Gender
Male	12 (60)
Female	8 (40)
RPA
Class I	2 (10)
Class II	16 (80)
Class III	2 (10)
ECOG performance status
0	2 (10)
1	13 (65)
2	4 (20)
3	1 (5)
4	0 (0)
Histology
Adenocarcinoma	18 (90)
Squamous	1 (5)
Adenosquamous	1 (5)
Extracranial metastases
Yes	11 (55)
No	9 (45)
Lesion location
Parietal	7 (35)
Frontal	6 (30)
Occipital	2 (10)
Cerebellar	2 (10)
Other	3 (15)