Table 6. Comparison of the gender and CT findings between patients with benign or malignant lesions.

	Malignant pulmonary nodules	Benign pulmonary nodules	P
Gender			0.665
Men	68	31
Women	46	18
Lobulation			<0.001
Yes	106	31
None	8	18
Rim			1.000^a
Clear	111	48
Ambiguous	3	1
Spiculated			<0.001
Yes	95	25
None	19	24
Air cavity density			0.027*
Yes	61	17
None	53	32
Calcification			0.007*
Yes	6	10
None	108	39
Pleural indentation			<0.001
Yes	80	18
None	34	31
Satellite lesions			0.029*^,a
Yes	1	4
None	113	45
Vascular aggregation			<0.001
Yes	77	8
None	36	41

*, P<0.05; ^a, Fisher’s exact test.