Table 2.

Clinical characteristics of patients

Characteristics	Primary lung tumor	Metastatic lung tumor	P Value
Sex* (cases (%))			0.3638
Male	46 (45.5%)	75 (52.1%)
Female	55 (54.5%)	69 (47.9%)
Age (years)			0.4110
Average ± SD	65.0 ± 11.2	63.8 ± 11.3
Median	67.0	64.0
Range	29-85	32-89
Adenocarcinomas	72 (70.6%)	131 (91.0%)	N/A
Squamous cell carcinomas	30 (29.4%)	13 (9.0%)
Total cases	102	144	N/A

FNA: find needle aspiration. *For one case of a primary lung tumor, the patient sex was unknown.