Table 1.

Characteristics of the patients and the nodules

Characteristic	Benign	Malignant
Patients*	81	55
Age (years)	54 ± 11 (25-77)	47 ± 13 (22-78)
Gender
Female	59	44
Male	22	11
Nodules	94	61
Size (mm)	20.4 ± 10.9 (7-53)	21.1 ± 10.8 (7-28)
7-10 mm	21	37
> 10 mm	73	24
Location
Left lobe	49	23
Right lobe	40	34
Isthmus	5	4

^*Patients with multiple nodules were classified into malignant group, when they had at least one nodule that was histopathological proved malignant.