Table 2 Comparison of CT imaging features of GPs

Maximum diameter

2.40 (1.70, 3.10)

1.35 (1.10, 1.72)

 < 0.001

Number

0.902

 Single

38 (84.44)

58 (85.29)

 Multiple

7 (15.56)

10 (14.71)

Location

0.099

 Bottom

28 (62.22)

34 (50.00)

 Bottom + Body

1 ( 2.22)

8 (11.76)

 Body

7 (15.56)

19 (27.94)

 Body + Neck

2 ( 4.44)

2 ( 2.94)

 Neck

7 (15.56)

5 ( 7.35)

Base

 < 0.001

 Narrow

7 (15.56)

59 (86.76)

 Wide

38 (84.44)

9 (13.24)

Gallbladder stone

0.804

 Absent

39 (86.67)

60 (88.24)

 Present

6 (13.33)

8 (11.76)

CT value

 Plain phase CT value

49.39 ± 9.47

35.77 ± 11.38

 < 0.001

 Arterial phase CT value

84.72 ± 20.68

64.95 ± 17.25

 < 0.001

 Portal phase CT value

93.08 ± 17.59

71.33 ± 15.47

 < 0.001

 Delay phase CT value

86.67 ± 15.21

67.65 ± 14.29

 < 0.001