Table 1 Comparison of patients’ characteristics with multiple and solitary PSP.

Published time (n)

36

43

 Before 2000

3

8.33

 2000–2005

5

13.89

 2006–2010

3

8.33

 2011–2015

6

16.67

 2016–2020

19

52.78

Distribution area (n)

36

43

 Asia

32

88.89

38

 Other

4

11.11

Gender (n)

36

43

0.1974

 Male

6

16.67

12

 Female

30

83.33

31

Age (year) (n)

36

43

0.0035

 Mean ± SD

40.36 ± 18.12

51.28 ± 12.74

 Quartile

37 (25, 54.5)

52(43, 60)

 Range

16–73

24–74

Diagnosis (n)

34

43

 Percutaneous lung biopsy

6

17.65

 Intraoperative pathology

4

11.76

 Postoperative pathology

24

70.59

43

Tumour size (mm) (n)

28

43

0.1649

 Mean ± SD

43.54 ± 46.18

30.56 ± 17.62

 Quartile

27.5 (20, 50)

27(20, 36)

Extrapulmonary metastasis (n)

 Yes/no

3/33

0/43

Misdiagnosis (n)

10

27.78

0

 Pulmonary tuberculosis

4

11.11

 Lung metastases

4

11.11

 Others

2

5.56

Therapy (n)

34

43

 Sublobar resection

13

38.24

16

 Sublobar resection + lobectomy

2

5.88

 Lobectomy

8

23.53

27

 Pneumonectomy

6

17.65

 Observation

5

14.71