Characteristic Typical (n=82) Atypical (n=21) P Value
Size
Small nodule (<1cm) 2(2.44%) 5(23.81%) 0.003
Lobule (1 to 3cm) 38(46.34%) 3(14.29%) 0.007
3cm to lobe 42(51.22%) 13(61.90%) 0.381
Distribution and location
Focal 0 9(42.86%) <0.01
Multi-focal/diffuse 82 12(57.14%) <0.01
Airway 0 7(58.33%) <0.01
Subpleural 82 0 <0.01
Segmental/lobe 0 5(41.67%) <0.01
Density
Pure-GGO 43(52.44%) 4(19.05%) 0.006
Mix-GGO 28(34.15%) 9(42.86%) 0.458
Consolidation 11(13.41%) 8(38.10%) 0.009
Lobular structure scores 3.42±1.25 1.51±1.34 <0.0001