Table 1.

Patient eligibility criteria for SBRT.

Age	Any
ECOG	0–2
Medically operable patients	Patients who refuse surgical intervention
Number of lesions	Range 1–5
Tumor diameter	<50 mm
Location	Peripheral Central
Medically inoperable patients	Poor lung function: FEV1 < 40% predicted, postoperative FEV1 < 30% predicted, decrease diffusing capacity < 40% predicted, baseline hypoxemia (≤70 mm Hg) and/or hypercapnia (>50 mmHg), and oxygen consumption during exercise < 50% predicted. Important comorbidities: Severe pulmonary hypertension; diabetes mellitus with end-organ damage; severe cerebral, cardiovascular or peripheral vascular disease; or severe chronic heart disease

ECOG: Eastern. Operative Oncology Group Scale of performance status. FEV1: Forced Expiratory Volume in the first second.