Table 2 Pathological features of BOT

Location

Left

84 (48.2)

Right

63 (35.4)

Bilateral

31 (17.4)

Diameter

≥10 cm

78 (43.8)

<10 cm

74 (41.6)

N/A

26 (14.6)

Histology

Serous

71 (39.9)

Mucinous

80 (44.9)

Endometrioid

18 (10.1)

N/A

9 (5.1)

Stage

Ia

76 (42.7)

Ib

13 (7.3)

Ic

26 (14.6)

II

14 (7.8)

III

27 (15.2)

N/A

22 (12.4)

Micropapillary^a

Yes

20 (28.2)

Microinvasion^a

Yes

11 (15.5)

Intraepithelial neoplasia^b

Yes

20 (25.0)

Pelvic lymph node

Positive

15 (15.2)

Negative

84 (84.8)

Para-aortic lymph node

Positive

6 (16.7)

Negative

30 (83.3)

Invasive implants

Yes

8 (4.5)

Residue

2 (1.1)

176 (98.9)