TABLE 1

Relationship between nodule size, expressed as diameter and volume, and growth rate, expressed as volume doubling time (VDT), with the prevalence of malignancy

	Prevalence of malignancy %
	NELSON screening study [8]	Literature review [9]
Diameter mm
<5	0.4	0–1
5–10	1.3	6–28
≥10	15.2	33–60
≥20		64–82
Volume mm³
≤100	0.6
100–300	2.4
≥300	16.9
VDT days
≥600	0.8
400–600	4
≤400	9.9

Data from [8, 9].