Table 2. Lesion distribution patterns on CT images.

	Total  (n=151)	Group 1  (n=83)	Group 2 (n=68)	p
Distribution pattern
Peripheral	73 (48.3%)	35 (42.2%)	38 (55.9%)	0.094
Peripheral and central	45 (29.8%)	28 (33.7%)	17 (25%)	0.245
Distribution
Bilateral	109 (72.2%)	53 (63.9%)	56 (82.4%)	0.012
Right upper lobe	94 (62.3%)	42 (50.6%)	52 (76.5%)	0.01
Right middle lobe	81 (53.6%)	35 (42.2%)	46 (67.6%)	0.02
Right lower lobe	109 (72.2%)	53 (63.9%)	56 (82.4%)	0.012
Left upper lobe	98 (64.9%)	46 (55.4%)	52 (76.5%)	0.007
Left lower lobe	109 (72.2%)	53 (63.9%)	56 (82.4%)	0.012