Table 1

Tumour parameters

T‐stage of primary tumour
 T111 (14)
 T227 (35)
 T319 (25)
 T420 (26)
Lymph node metastases
 N020 (26)
 N115 (20)
 N221 (27)
 N321 (27)
Distant metastasis
 M038 (49)
 M139 (51)
Tumour stage groups
 IA5 (7)
 IB8 (10)
 IIA3 (4)
 IIB7 (9)
 IIIA8 (10)
 IIIB7 (9)
 IV39 (51)
Histological classification
 Adenocarcinoma26 (34)
 Bronchioloalveolar carcinoma4 (5)
 Squamous cell carcinoma40 (52)
 Large cell carcinoma7 (9)
  • Data are presented as n (%) unless otherwise stated