Table 1.
Patient characteristics
| Characteristics | No. of patients(%) |
|---|---|
|
Gender |
|
| Male |
20 (68.97) |
| Female |
9 (31.03) |
|
Age(years) |
|
| Median |
58 |
| Range |
36-75 |
| ≥60 |
13 (44.83) |
| <60 |
16 (55.17) |
|
KPS scores |
|
| ≥70 |
19 (65.52) |
| <70 |
10 (34.48) |
|
Pathology |
|
| Adenocarcinoma |
18 (62.07) |
| Non-adenocarcinoma |
11 (37.93) |
|
RPA class |
|
| 2 |
19 (65.52) |
| 3 |
10 (34.48) |
|
SIR scores |
|
| ≤5 |
13 (44.83) |
| >5 |
16 (55.17) |
|
GPA scores |
|
| 0-1 |
13 (44.83%) |
| 1.5-2 |
11 (37.93%) |
| 2.5-3 |
3 (10.34%) |
| 3.5 |
2 (6.90%) |
|
History of EGFR-TKI treatment |
|
| Yes |
11 (37.93) |
| No |
18 (62.07) |
|
Number of lesions |
|
| Mean |
3 |
| <3 |
15 (51.72) |
| ≥3 |
14 (48.28) |
|
Maximum lesion volume |
|
| <3 cc |
12 (41.38) |
| ≥3 cc |
17 (58.62) |
|
Total volume of lesions |
|
| <7 cc |
15 (51.72) |
| ≥7 cc |
14 (48.28) |
| Total | 29 |
Abbreviations: KPS = Karnofsky performance status; RPA = recursive partitioning analysis; SIR = score index for radiosurgery in brain metastases; GPA = graded prognostic assessment; EGFR-TKI = epidermal growth factor receptor tyrosine kinase inhibitor.