Table 1. Total number of CT scans of 114 malignant SPNs during 2 years of follow-up.

Time point (months)	Number of CT scans			Total
	Pure GGNs (n=29)	Part-solid nodules (n=45)	Solid nodules (n=40)
3	13	16	12	41
6	12	13	10	35
12	11	14	11	36
18	10	11	12	33
24	12	10	10	32
Total	58	64	55	177*

*, total number of CT scans during 2 years of follow-up. SPN, solitary pulmonary nodule; GGN, ground-glass nodule.