Table 1. Demographic data, indication and smoking habit of the 85 enrolled patients.

Age (years), mean	65.5
Age (years), range	42–82
Gender
Male, n (%)	56 (66)
Female, n (%)	29 (34)
Indication, n (%)	Suspected malignancy: 18 (21)	Pulmonary embolism: 9 (11)	Staging: 40 (47)	Others: 18 (21)
Cigarette consumption, n	<20 py: 33	20–<40 py: 30	40–<60 py: 13	≥60 py: 9

py, pack years.