Table 1 The demographic and clinicopathological data of the total patients

Number

42

Sex, female/male (ratio)

15/27 (35.7/64.3)

Age, median (IQR)

45.0 (33, 60)

EAS syndrome

 Yes, n (%)

22 (52.4)

 No, n (%)

20 (47.6)

Pathological result

 Typical, n (%)

24 (57.1)

 Atypical, n (%)

18 (42.9)

Surgical procedure

 Segmentectomy, n (%)

2 (4.8)

 Lobectomy, n (%)

34 (81.0)

 Bilobectomy, n (%)

2 (4.8)

 Sleeve, n (%)

4 (9.5)

Tumor size, median (IQR)

2.4 (1.5, 3.5)

 T1 ≤ 3 cm, n (%)

28 (66.7)

 T2 > 3 cm, ≤ 5 cm, n (%)

10 (23.8)

 T3 > 5 cm, ≤ 7 cm, n (%)

4 (9.5)

 T4 > 7 cm, n (%)

0

Nodes metastases

 N1 positive, n (%)

16 (38.1)

 N2 positive, n (%)

26 (61.9)

 Ki-67, median (IQR)

4.5 (2, 8)

Chemotherapy

 Yes, n (%)

18 (42.9)

 No, n (%)

24 (57.1)