Table 1 Clinicopathological features of patients with ovarian clear cell carcinoma

Age (years)

51.6 ± 7.8

52.9 ± 8.5

49.9 ± 6.4

Parity

0.9 ± 0.5

1.0 ± 0.5

0.8 ± 0.5

 Nulliparous (%)

20 (16.1%) (n = 124)

8 (11.6%) (n = 69)

12 (21.8%) (n = 55)

Tumor size (cm)

11.3 ± 4.6 (n = 118)

12.3 ± 5.0 (n = 66)

9.9 ± 3.7 (n = 52)

Serum CA 125 (U/mL)

295.0 ± 934.7

433.5 ± 1188.2

94.7 ± 198.4

 Normal (%)

40 (34.8%)

20 (29.4%)

20 (42.6%)

 Elevated (%)

75 (65.2%) (n = 115)

48 (70.6%) (n = 68)

27 (57.4%) (n = 47)

 Left

61 (48.8%)

32 (45.7%)

29 (52.7%)

 Right

52 (41.6%)

28 (40.0%)

24 (43.6%)

 Both

12 (9.6%)

10 (14.3%)

2 (3.6%)

 I

82 (65.6%)

36 (51.4%)

46 (83.6%)

 II

12(9.6%)

7 (10.0%)

5 (9.1%)

 III

28 (22.4%)

24 (34.3%)

4 (7.3%)

 IV

3 (2.4%)

3 (4.3%)

0 (0%)

 Laparoscopy

21 (16.8%)

8 (11.4%)

13 (23.6%)

 Laparotomy

104 (83.2%)

62 (88.6%)

42 (76.4%)

 Yes

114 (91.2%)

63 (90.0%)

51 (92.7%)

 No

11 (8.8%)

7 (10.0%)

4 (7.3%)

Ascites (%)

48 (38.4%)

37 (52.9%)

11 (20%)

Ascites positivity (%)

20 (41.7%)

18 (48.6%)

2 (18.2%)

 Positive

12 (10.6%)

10 (16.9%)

2 (1.8%)

 Negative

101 (89.4%) (n = 113)

49 (83.1%) (n = 59)

52 (96.3%) (n = 54)

Residual lesion (%)

120 (96.0%)

66 (94.3%)

54 (98.2%)

 0

113 (90.4%)

60 (85.7%)

53 (96.4%)

 ≤1 cm

7 (5.6%)

6 (8.6%)

1 (1.8%)

 > 1 cm

5 (4.0%)

4 (5.7%)

1 (1.8%)

Cycles of chemotherapy

6.3 ± 1.8

6.4 ± 1.9

6.1 ± 1.6

 Sensitive

85 (76.6%)

42 (66.7%)

43 (89.6%)

 Resistant

26 (23.4%) (n = 111)

21 (33.3%) (n = 63)

5 (10.4%) (n = 48)