Table 1 Characteristics of the patients at p-stage III/N2

Gender; male/female

89/32

Histology

   Adenocarcinoma

65

   Squamous cell carcinoma

39

   Large cell carcinoma

13

   Adenosquamous cell carcinoma

4

T factor

   T1

27

   T2

53

   T3

32

   T4

9

Clinical Stage

   I

46

   II

6

   III

69

Operative procedure

Operative procedure

   Pneumonectomy

25

   Bilobectomy

9

   Lobectomy

87

Number of involved lymph nodes (N1 +N2)

   1

17

   2

21

   3

19

   4

10

   ≥5

54