Table 4. Lung-RAD^® suspicious categories.

Category	Finding
4A	Solid nodule(s): ≥8 to <15 mm at baseline or growing <8 mm or new 6 to <8 mm
	Part solid nodule(s): ≥6 mm with solid component ≥6 mm to <8 mm or with a new or growing <4 mm solid component
	Endobronchial nodule
4B	Solid nodule(s): ≥15 mm or new or growing, and ≥8 mm
	Part solid nodule(s) with: a solid component ≥8 mm or a new or growing ≥4 mm solid component
4X	Category 3 or 4 nodules with additional features or imaging findings that increases the suspicion of malignancy