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Table 1 The CHFU morphologic features, SWE elastic indices and metastatic status of 75 indeterminate cervical sLN in 49 patients with nasopharyngeal carcinoma

From: RETRACTED ARTICLE: Ultrasound Elastography supplement assessing nodal status of magnetic resonance imaging staged cervical N0 patients with nasopharyngeal carcinoma

Characteristics

Metastatic status

p value

Positive n = 15

Negative n = 60

shape

oval

3

2

0.021

Round -like

12

58

boundary

sharp

10

46

0.426

indistinct

5

14

Long axis (mm)

mean ± SD

13.87 ± 2.88

14.4 ± 5.12

0.682

≥10.5

14

45

0.868

<10.5

1

15

Minor axis (mm)

mean ± SD

7.67 ± 1.92

6.30 ± 2.01

0.021

≥6.5

11

25

0.023

<6.5

4

35

Long axis/minor axis

≤2

13

23

0.008

>2

2

37

Hilum

Normal

2

42

< 0.001

Shift or disappear

13

18

Inhomogeneous thickening of the cortex

Yes

14

31

0.003

No

1

29

Blood flow signals

with

0

13

0.047

without

15

47

Five-point-scale

=2

1

31

0.002

> 2

14

29

Emax (kPa)

mean ± SD

42.34 ± 26.21

22.85 ± 9.95

< 0.001

Emin (kPa)

mean ± SD

14.12 ± 8.96

8.75 ± 4.53

0.002

Emean (kPa)

mean ± SD

32.69 ± 21.03

12.93 ± 6.13

< 0.001

  1. CHFU = conventional high-frequency ultrasound; sLN = small lymph node; SD = standard deviation