Table 1– Distributions for solid, acinar, papillary, micropapillary and lepidic growth in dependence of radiological tumour characteristics
Radiological characteristicsCases nLepidic %Acinar %Solid %Papillary %Micropapillary %
Sphericity
 Spherical13012±9639±8833±466±087±62
 Nonspherical4413±8638±9827±1610±689±32
 p-value0.8120.8520.2990.1150.525
Location
 Peripheral13415±2238±2830±348±108±06
 Central406±3844±2537±004±388±00
 p-value0.0230.2330.2880.2180.983
Margins
 Nonsmooth12214±5141±0228±986±439±06
 Any smooth5210±1036±4438±659±135±67
 p-value0.2190.3190.1180.4260.183
 Nonspiculated5519±9134±4526±8210±828±00
 Any spiculated11910±0842±0634±205±598±07
 p-value0.0180.0920.1930.0750.979
 Nonlobulated7615±7943±1627±505±138±42
 Any lobulated9811±1736±9435±268±887±76
 p-value0.1810.1420.1440.1140.777
Predominant margin
 Mixed2127±3839±5215±249±298±57
 Smooth255±4030±6057±802±803±40
 Spiculated7710±3945±5830±914±298±83
 Lobulated5115±3935±2027±4513±048±92
 p-value0.0020.056<0.0010.0130.444
Attenuation
 GGO267±5032±500±000±000±00
 Semi-solid6317±7033±5726±8310±3211±59
 Solid1099±5943±3035±375±606±15
 p-value<0.0010.0790.1270.1690.060
GGO % semi–solid
 0–25277±0430±0040±1910±1912±59
 26–501811±9441±3922±5012±7811±39
 51–751144±5530±4517±274±093±64
 76–100731±4332±141±4314±2920±71
 p-value<0.0010.5550.0310.6650.324
Cavitation
 No cavitation737±2639±7942±263±227±47
 Internal air bronchogram8715±6940±4624±4310±409±02
 Cavitation1222±0834±1727±9210±005±83
 p-value0.0090.7630.0040.0220.708
  • Data are presented as mean±sd, unless otherwise stated. GGO: ground-glass opacity.