Table 5 The difference of MRI parameters among three groups of EOTs

Septum thickness

0.24 ± 0.11

0.53 ± 0.41

0.77 ± 0.34

<0.001

Volume of tumor

483.30 ± 883.11

1106.15 ± 2000.28

412.88 ± 674.36

0.058

Volume of solid portion

0.00 ± 0.00

57.23 ± 163.74

79.63 ± 120.08

<0.001

Volume ratio of solid portion

0.00 ± 0.00

9.58 ± 19.98

43.36 ± 37.49

<0.001

Maximum diameter of tumor

9.02 ± 6.19

12.44 ± 7.63

9.47 ± 4.50

0.055

Maximum diameter of solid portion

0.00 ± 0.00

2.52 ± 3.60

5.25 ± 3.03

<0.001

Maximum diameter ratio of solid portion

0.00 ± 0.00

22.84 ± 30.11

62.56 ± 33.19

<0.001

Bilateral involvement

0.002

 No

310(93.94)

48(97.96)

80(81.63)

 Yes

20(6.06)

1(2.04)

18(18.37)

Number of cysts

<0.001

 <5

311(89.63)

23(46.00)

88(75.86)

 5–10

15(4.32)

3(6.00)

13(11.21)

 >10

21(6.05)

24(48.00)

15(12.93)

Enhancement degrees

<0.001

 Mild

290(95.08)

16(33.33)

9(8.26)

 Moderate

0(0)

4(8.33)

29(26.60)

 Prominent

15(4.92)

28(58.34)

71(65.14)

Ascites

0.003

 No

255(77.27)

22(44.90)

33(33.67)

 Yes

75(22.72)

27(55.10)

65(66.33)

Peritoneal carcinomatosis

<0.001

 No

330(100)

48(97.96)

74(75.51)

 Yes

0(0)

1(2.04)

24(24.49)