Table 2 Effect of prognostic factors on OS of the studied patients

Sex

Male

65.48

38.22

60.86

6.10

149.07

0.648

Female

68.82

31.42

69.97

18.20

122.80

Time of respectability

synchronous

115.67

115.67

115.67

115.67

0.182

metachronous

66.10

34.69

63.42

6.10

149.07

Laterality

Unilateral

81.49

33.38

85.23

36.53

135.97

0.076

Bilateral

62.51

34.67

60.86

6.10

149.07

Tumor necrosis of 1ry

> or equal 90%

90.32

31.17

88.78

50.73

129.93

0.017

< 90%

58.51

33.32

52.24

6.10

149.07

Timing of lung metastasis

Initially(synchronous)

64.59

36.21

61.88

6.10

115.67

0.001

during treatment

49.78

30.48

49.73

18.20

102.43

Relapse before 1 year follow up

64.03

23.47

63.42

31.47

112.57

Relapse after 1 year follow up

113.89

25.93

118.74

71.03

149.07

Size of 1ry

< 5 cm

80.13

80.13

80.13

80.13

0.727

> 5 cm

66.76

35.30

63.42

6.10

149.07

Site of 1ry

Lower limb

63.85

34.72

61.90

6.10

149.07

0.318

Upper limb

50.53

27.17

36.53

29.40

96.40

Surgical approach of metastatectomy

Thoracotomy

66.19

36.13

63.42

6.10

149.07

0.625

Thoracotomy + video-assisted

81.16

24.60

94.33

52.77

96.37

Video-assisted

65.91

20.10

65.91

51.70

80.13

Complications

Yes

62.90

38.04

59.83

18.23

129.93

0.512

No

69.16

33.67

64.95

6.10

149.07