Parameters

Variables

Fluid type: USG

Fluid type: Biochemical

Transudate

(n = 14)

Exudate

(n = 29)

P value

Transudate

(n = 11)

Exudate

(n = 32)

P value

Side

・ Left

4 (28.6%)

8 (27.6%)

0.014*

4 (36.4%)

8 (25%)

0.014*

・ Right

5 (35.7%)

20 (69%)

3 (27.3%)

22 (68.8%)

・ Bilateral

5 (35.7%)

1 (3.4%)

4 (36.4%)

2 (6.3%)

Axial diameter

・ 1 - 5 cm

9 (64.3%)

16 (55.2%)

0.570

7 (63.6%)

18 (56.3%)

0.736

・ 6 - 10 cm

5 (35.7%)

13 (44.8%)

4 (36.4%)

14 (43.8%)

Septation

・ Absent

14 (100%)

8 (27.6%)

<0.001**

11 (100%)

11 (34.4%)

<0.001**

・ Present

0 (0%)

21 (72.4%)

0 (0%)

21 (65.6%)

Internal echoes

・ Absent

14 (100%)

11 (37.9%)

<0.001**

11 (100%)

14 (43.8%)

0.001**

・ Present

0 (0%)

18 (62.1%)

0 (0%)

18 (56.3%)

PL thickening

・ Absent

11 (78.6%)

16 (55.2%)

0.137

9 (81.8%)

18 (56.3%)

0.166

・ Present

3 (21.4%)

13 (44.8%)

2 (18.2%)

14 (43.8%)

Parenchymal lesion

・ Absent

11 (78.6%)

25 (86.2%)

0.665

8 (72.7%)

28 (87.5%)

0.347

・ Present

3 (21.4%)

4 (13.8%)

3 (27.3%)

4 (12.5%)

Abnormal vascularity

・ Absent

14 (100%)

27 (93.1%)

1.000

11 (100%)

30 (93.8%)

1.000

・ Present

0 (0%)

2 (6.9%)

0 (0%)

2 (6.3%)

Fluid color

・ Straw colored

12 (85.7%)

23 (79.3%)

1.000

9 (81.8%)

26 (81.3%)

0.809

・ Hemorrhagic

2 (14.3%)

4 (13.8%)

2 (18.2%)

4 (12.5%)

・ Others

7 (50%)

14 (48.3%)

0 (0%)

2 (6.3%)