|
Age (years)
| |
|
Median (range)
|
58 (45–74)
|
|
Gender
| |
|
Male/Female
|
17 (73.9)/6 (26.1)
|
|
ECOG
a
performance status
| |
|
0-1
|
21 (91.3)
|
|
2
|
2 (8.7)
|
|
Pathology of the primary tumor
| |
|
Squamous-cell lung cancer
|
10 (43.5)
|
|
Non-squamous cell lung cancer
|
10 (43.5)
|
|
Sarcomatoid carcinoma
|
2 (8.7)
|
|
Small cell lung cancer
|
1 (4.3)
|
|
Surgical method
| |
|
Right upper lung lobectomy
|
9 (39.1)
|
|
Right lower lung lobectomy
|
3 (13.0)
|
|
Left upper lung lobectomy
|
5 (21.7)
|
|
Left lower lung lobectomy
|
4 (17.4)
|
|
Left pneumonectomy
|
2 (8.7)
|
|
T staging after surgery
b
| |
|
T1/T2/T3/T4
|
3 (13.0)/11 (47.8)/8 (34.8)/1(4.3)
|
|
N staging after surgery
b
| |
|
N0/N1/N2
|
10 (43.5)/6 (26.1)/7 (30.4)
|
|
Tumor stage after surgery
b
| |
|
I
|
6 (26.1)
|
|
II
|
9 (39.1)
|
|
III
|
8 (34.8)
|
|
Time from surgery to lung metastasis (months)
| |
|
Median (range)
|
16.0 (4.0-75.0)
|
|
Sites of lung metastasis
| |
|
Contralateral lung of the primary tumor
|
12 (52.2)
|
|
Ipsilateral lung of the primary tumor
|
11 (47.8)
|
|
Follow-up time since diagnosis of lung metastasis (months)
| |
|
Median (range)
|
14.0 (6.0-47.0)
|
