Table 2 Summary of pathological subtypes

Benign (n = 112)

Benign epithelial tumor

38

Benign sex-cord stromal tumor

7

Benign germ cell tumor

20

Benign adenomatoid tumor

1

Endometrioma

37

Ovarian torsion

3

Pelvic inflammatory disease

2

Functional cyst

4

Malignant (n = 73)

Borderline epithelial tumor

17

Malignant epithelial tumor

40

Malignant sex-cord stromal tumor

6

Malignant germ cell tumor

2

Metastasis

8