Skip to main content

Table 2 Characteristics on US in the training and testing set

From: Differential diagnosis between hepatic alveolar echinococcosis and intrahepatic cholangiocarcinoma with conventional ultrasound and contrast-enhanced ultrasound

Imaging Features on US

Training set (n = 80)

Testing set (n = 40)

P*

HAE(n = 36)

ICC(n = 44)

HAE(n = 24)

ICC(n = 16)

 

Conventional US

Location

  Right lobe

30 (83.3)

24 (54.5)

20 (83.3)

9 (56.3)

0.252

  Left lobe

6 (16.7)

20 (45.5)

4 (16.7)

7 (43.7)

0.393

Lesion size

   ≤ 5.0 cm

14 (38.9)

17 (38.6)

8 (33.3)

7 (43.7)

0.755

   > 5.0 cm

22 (61.1)

27 (61.4)

16 (66.7)

9 (56.3)

0.145

Echogenicity

  Hyper or Iso

5 (13.8)

3 (6.8)

5 (20.8)

4 (25.0)

1.000

  Mixed

25 (69.4)

14 (31.8)

18 (75.0)

5 (31.3)

0.271

  Hypo

6 (16.7)

27 (61.4)

1 (4.2)

7 (43.7)

1.000

Margin

  Clear

17 (47.2)

20 (45.5)

11 (45.8)

8 (50.0)

0.573

  Unclear

19 (52.8)

24 (54.5)

13 (54.2)

8 (50.0)

0.287

Bile duct dilatation

1 (2.8)

16 (36.4)

1 (4.2)

5 (31.3)

0.462

Pseudocystic appearance

9 (25.0)

1 (2.3)

5 (20.8)

0 (0)

1.000

Calcification

16 (44.4)

0 (0)

13 (54.2)

0 (0)

NA

CEUS

Arterial phase

  Hyper-

23 (63.9)

35 (79.5)

16 (66.7)

15 (93.8)

0.370

  Iso-

5 (13.9)

8 (18.2)

5 (20.8)

1 (6.3)

0.141

  Hypo- or Non-

8 (22.2)

1 (2.3)

3 (12.5)

0 (0)

1.000

Enhancement pattern

  Regular rim

33 (91.7)

4 (9.0)

20 (8.3)

2 (12.5)

1.000

  Irregular rim

2 (5.6)

22 (50.0)

4 (16.7)

7 (43.8)

0.063

  Heterogeneous

1 (2.7)

9 (20.5)

0 (0)

5 (31.2)

1.000

  Homogeneous

0 (0)

9 (20.5)

0 (0)

2 (12.5)

NA

Portal phase

  Hyper-

1 (2.8)

0 (0)

0 (0)

0 (0)

NA

  Iso-

9 (25.0)

0 (0)

10 (41.7)

1 (6.3)

1.000

  Hypo- or Non-

26 (72.2)

44 (100)

14 (58.3)

15 (93.7)

0.3670

Late phase

  Hyper-

1 (2.8)

0 (0)

0 (0)

0 (0)

NA

  Iso-

7 (19.4)

0 (0)

9 (37.5)

1 (6.3)

1.000

  Hypo- or Non-

28 (77.8)

44 (100)

15 (62.5)

15 (93.7)

0.380

Enhancement duration#

197.4 ± 138.2

23.7 ± 16.2

205.9 ± 137.6

19.9 ± 5.3

 

Marked wash-out

10 (27.8)

32 (72.7)

5 (20.8)

12 (75.0)

0.745

  1. Note.---Unless otherwise indicated, data are number of nodules, with percentages in parentheses
  2. # Data are means± standard deviations
  3. *Statistical analysis using χ2 or Fisher’s exact test demonstrate differences between the training set and testing set. NA Not available
  4. HAE Hepatic alveolar echinococcosis; ICC Intrahepatic cholangiocarcinoma; US Ultrasound; CEUS Contrast enhanced ultrasound