Primary solid lung cancerous nodules with different sizes: computed tomography features and their variations

BMC Cancer

Table 4 CT features indicating suspicious malignancy for group A nodules

CT features	Numbers	Percentage (%)
SLs of both lungs^a	21	60.0
Not clinging to pleura^a	35	100.0
Irregular shape^b	5	14.3
Heterogeneous density^b	18	51.4
Lobulation^c	10	28.6
Spiculation or spinous protuberance^c	7	20
Coarse tumor-lung interface^a	26	74.3
Unclear tumor-lung interface^b	6	17.1
Halo sign^a	7	20

SL Superior lobe, ^a indicates the common features for group A-D nodules; ^b indicates these features are relatively common in group A nodules. ^c indicates these features are relatively rare in group A nodules

ISSN: 1471-2407