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Table 1 Patient characteristics

From: Solid component proportion is an important predictor of tumor invasiveness in clinical stage T1N0M0 (cT1N0M0) lung adenocarcinoma

Characteristic

No. of patients (%)

Median age (y)a

58.6 ± 9.8 (31 ~ 84)

Sex

 Male

157 (41.9)

 Female

218 (58.1)

Smoking status

 Current or former smoker

119 (31.7)

 Non-smoker

256 (68.3)

Invasive lobe

 RUL

152 (40.5)

 RML

19 (5.1)

 RLL

69 (18.4)

 LUL

84 (22.4)

 LLL

51 (13.6)

Surgical procedure

 Wedge resection

33 (8.8)

 Segmentectomy

1 (0.3)

 Lobectomy

341 (90.9)

Imaging techniqueb

 Enhanced CT

193 (51.5)

 Non-enhanced CT

182 (48.5)

 PET/CT

147 (39.2)

Subtype predominance

 AIS

41 (10.9)

 MIA

51 (13.6)

 Lepidic

49 (13.1)

 Acinar

176 (46.9)

 Papillary

32 (8.5)

 Micropapillary

5 (1.3)

 Solid

11 (2.9)

 Variants

10 (2.7)

Pathologic Stage c

 IA

173 (47.5)

 IB

148 (40.7)

 IIA

22 (6.0)

 IIIA

21 (5.8)

  1. Note. Unless otherwise indicated, data are numbers, with percentages in parentheses. a The data are presented as the means ± standard deviation, with ranges in parentheses. b All patients underwent CT examination. c Eleven patients did not undergo lymph node dissection; the pathologic stage was made in 364 patients. AIS, adenocarcinoma in situ; MIA, minimally invasive adenocarcinoma; LLL, left lower lobe; LUL, left upper lobe; RLL, right lower lobe; RML, right middle lobe; RUL, right upper lobe