Table 1 Patient characteristics before treatment

Age, years

median

57

range

38 to74

Gender

male

69(84%)

female

13(16%)

Location of the tumor

central

76(93%)

peripheral

6(7%)

Biopsy method

bronchoscopy

55(67%)

CT-guided needle biopsy

20(24%)

mediastinoscopy

3(4%)

EBUS-TBNA

4(5%)

Cell type by biopsy

squamous

47(57%)

adenocarcinoma

26(32%)

non-small-cell

9(11%)

Clinical stage

IIB (T3N0M0/T2bN1M0)

32(39%)

IIIA (T1-3N2M0/T3N1M0/T4N0-1M0)

50(61%)