Table 1.

Patients and tumor characteristics

Patients (n = 50)
Age (y), mean and range	75.6 (57–86)
Sex (Male/Female)	40/10
Diagnosis
Lung cancer	39
Lung metastasis	11
Tumors (n = 57)
Type (Solid/GGO)	51/6
Size (in maximum diameter)
≤2 cm	22
2–3 cm	27
>3 cm	8
GTV (ml), mean and range	6.52 (0.75–25.8)
Histology
Adenocarcinoma	31
SCC	12
NSCLC	3
Unknown	11

GGO = ground-glass opacity, GTV = gross tumor volume, SCC = squamous cell carcinoma, NSCLC = non-small cell lung cancer.