Table 2

Demographic characteristics and clinical information of the 76 patient with small sclerosing pneumocytoma

VariablesFrequencyPercentage
Age (years)30–3967.9
40–491823.7
50–592532.9
60–691823.7
70–79911.8
SexMale79.2
Female6990.8
Tumour size0–0.5 cm2127.6
0.6–1.0 cm5572.4
LocationRight upper lobe1215.8
Right middle lobe1317.1
Right lower lobe1519.7
Left upper lobe1317.1
Left lower lobe2330.3
NumberSolitary7396.1
Multiple*33.9
Concomitant lesionNo2938.2
AIS2330.3
MIA1013.2
Invasive adenocarcinoma79.2
Thymic tumour22.6
Granuloma33.9
Inflammation22.6
CT†Solid and well demarcated6180.3
Solid and obscure boundary67.9
Ground-glass opacity45.3
No sign45.3
  • *Case 1: a 1.2 cm nodule and a 0.7 cm nodule located in the left lower lobe separately. Case 2: a 3.5 cm nodule was at the dorsal segment of the left lower lobe, and two nodules measuring 1.0 cm and 0.4 cm in diameter were at the segment of the same lobe. Case 3: a 9.0 cm tumour mass and two satellite nodules measuring 0.2 cm and 0.5 cm separately were present in the right middle lobe.

  • †Seventy-five cases had CT images at Shanghai Chest Hospital.

  • AIS, Adenocarcinoma in situ; MIA, Microinvasive adenocarcinoma.