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Table 4 CT features indicating suspicious malignancy for group A nodules

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

CT featuresNumbersPercentage (%)
SLs of both lungsa2160.0
Not clinging to pleuraa35100.0
Irregular shapeb514.3
Heterogeneous densityb1851.4
Spiculation or spinous protuberancec720
Coarse tumor-lung interfacea2674.3
Unclear tumor-lung interfaceb617.1
Halo signa720
  1. 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