Table 1.

Clinical Characteristics of Patients.

	Training cohort			Testing cohort
Characters	NIMA	IMA	P	NIMA	IMA	P
Smoking
No	64	75	.405	38	33	.922
Yes	53	50		18	15
Solid
No	65	81	.142	15	10	.479
Yes	52	44		41	38
Lobul
No	40	33	.187	18	11	.296
Yes	77	92		38	37
Spicul
No	72	74	.710	30	31	.256
Yes	45	51		26	17
Cyst
No	95	64	<.001	43	23	.002
Yes	22	61		13	25
Necrosis
No	86	117	<.001	39	43	.013
Yes	31	8		17	5
Edge
No	17	12	.238	10	6	.450
Yes	100	113		46	42
VS
No	93	83	.022	52	29	<.001
Yes	24	42		4	19
BS
No	105	106	.250	51	39	.143
Yes	12	19		5	9
PLT
No	45	108	<.001	21	33	.001
Yes	72	17		35	15
BCS
No	73	103	<.001	33	40	.007
Yes	44	22		23	8
LL
No	78	47	<.001	36	17	.003
Yes	39	78		20	31
Gender
Male	62	62	.642	22	16	.530
Female	55	62		34	32
ΔCTV median [IQR]	37.000 [10.000, 66.625]	24.000 [12.000, 76.000]	<.001	32.000 [22.000, 51.000]	25.000 [14.000, 46.000]	.018
Diameter, median [IQR]	2.300 [1.400, 3.600]	2.200 [1.500, 3.500]	.795	2.400 [1.400, 3.300]	2.300 [1.300, 3.500]	.855
Age, median [IQR]	60.000 [53.000, 67.000]	61.000 [56.000, 67.000]	.697	62.000 [56.000, 68.000]	64.000 [57.000, 67.000]	.802

Abbreviations: IMA, invasive mucinous adenocarcinoma; NIMA, noninvasive mucinous adenocarcinoma; Lobul, lobulation; Spicul, spiculation; Cyst, Cyst cavity; VS, vascular passage; BS, bronchus sign; PLT, pleural traction; BCS, bronchus cutoff sign; LL, lesion location in the lower lobe; ΔCT_V, venous CT value − plain CT value.