Table 1.

Clinicopathological characteristics of the study cohort.

	No. of patients (%)
Age (years)
Median (range)	62.5 (45–78)
Gender
Male	42 (75.0%)
Female	14 (25.0%)
Smoking status
Smoker	39 (69.6%)
Non-smoker	17 (30.4%)
Tumor family history
Yes	16 (28.6%)
No	40 (71.4%)
T stage
T1	3 (5.4%)
T2	22 (39.3%)
T3	17 (30.4%)
T4	14 (25.0%)
N stage
N0	32 (57.1%)
N1-2	24 (42.9%)
M stage
M0	52 (92.9%)
M1	4 (7.1%)
TNM stage
I	8 (14.3%)
II	15 (26.8%)
III	29 (51.8%)
IV	4 (7.1%)
Histological subtype
Pleomorphic carcinoma	44 (78.6%)
Spindle cell carcinoma	9 (16.1%)
Carcinosarcoma	2 (3.6%)
Pulmonary blastoma	1 (1.8%)