Table 1 Characteristics of the patients and lung lesions

Number of patients

146

Sex (Male/Female, n)

87/59

Age (mean ± SD, range, years)

59.71 ± 10.75 (35–81)

Number of lung lesions

181

 With pathology

146 (80.66%)

 Without pathology

35 (19.34%)

Diameter, n

 d_max<1.5 cm

36 (19.89%)

 1.5 cm ≤ d_max<3.0 cm

77 (42.54%)

 d_max≥3.0 cm

68 (37.57%)

SUVmax of lung lesions (mean ± SD, range)

11.03 ± 6.53 (1.10–47.50)

 With pathology

11.90 ± 6.57 (1.10–47.50)

 Without pathology

7.40 ± 4.72 (1.90–19.50)

 PD-L1 positive

14.80 ± 7.32 (3.50–39.20)

 PD-L1 negative

9.05 ± 6.31 (1.90–27.00)

Pathological types of lung lesions, n

146

 Malignant

128

  AC

94 (64.38%)

  SCC

15 (10.27%)

  SCLC

7 (4.79%)

  Other primary lung malignant tumors

9 (6.16%)

  Pulmonary metastasis

3 (2.05%)

 Benign

18

  Pulmonary hamartoma

1 (0.68%)

  Pulmonary sequestration

1 (0.68%)

  Tuberculosis

2 (1.37%)

  Nonspecific inflammation

14 (9.59%)

PD-L1 expression in NSCLC, n

73

 PD-L1 positivity

39 (53.42%)

  AC

34 (46.57%)

  SCC

3 (4.11%)

  Others

2 (2.74%)

 PD-L1 negativity

34 (46.58%)

  AC

31 (42.47%)

  SCC

3 (4.11%)