Lung nodules

Question 1

Timeframe suggesting nodule is likely benign

Answer 1

at least two years are highly unlikely to represent lung carcinoma

Question 2

Features of pulmonary nodule suggestive of malignancy

Answer 2

— large lesion size (eg, >15 mm), - — irregular or spiculated borders
— upper lobe location,
— thick-walled cavitation,
— presence or development of a solid component within a ground glass lesion