Table 1 Relation between the five used B-mode ultrasound criteria and final histopathological diagnosis

(1) Short-axis diameter

Range

Mean ± SD

4.5–17.6 mm

9.2 ± 3.3

6.7–27.4 mm

11 ± 3.8

0.218

(2) L/S ratio (long- to short-axis diameter ratio)

Range

Mean ± SD

Median/(IQR)

1.6–3

2.3 ± 0.5

2.4/(1.6–2.3)

1.3–4.2

1.7 ± 0.4

1.7 (1.5-1.9)

0.201

(3) Hilum

Absent: n (%)

Present: n (%)

7 (27%)

19 (73%)

58 (100%)

0 (0%)

<0.001*

(4) Margin

Sharp: n (%)

Irregular: n (%)

22 (90.9%)

4 (9.1%)

28 (49.3%)

30 (51.7%)

0.028*

(5) Echogenicity

Hypo: n (%)

Hyper: n (%)

17 (65.3%)

9 (34.6%)

40 (68.9%)

18 (31.3%)

0.134