Tumour parameters
| Tumour parameters | Patients n |
| T-stage of primary tumour | |
| T1 | 9 (15) |
| T2 | 23 (38) |
| T3 | 13 (21) |
| T4 | 16 (26) |
| Lymph node metastases | |
| N0 | 19 (31) |
| N1 | 13 (21) |
| N2 | 14 (23) |
| N3 | 15 (25) |
| Distant metastasis | |
| M0 | 28 (46) |
| M1 | 33 (54) |
| Tumour stage groups | |
| IA | 5 (8) |
| IB | 8 (13) |
| IIA | 1 (2) |
| IIB | 6 (10) |
| IIIA | 5 (8) |
| IIIB | 3 (5) |
| IV | 33 (54) |
| Histological classification | |
| Adenocarcinoma | 18 (29) |
| Bronchioloalveolar carcinoma | 3 (5) |
| Squamous cell carcinoma | 33 (54) |
| Large cell carcinoma | 7 (12) |
Data are presented as n (%)