Table 1

Stage and histological subtype distribution

FIGO stageNumber of casesHigh grade serous
(% by stage), n (%)
Histological subtypen (%)
17812 (15.4)Epithelial
Mucinous25 (32.1)
Endometrioid16 (20.5)
High grade serous12 (15.4)
Clear cell12 (15.4)
Low grade serous6 (7.7)
Unknown1 (1.3)
Non-epithelial
Germ cell tumor1 (1.3)
Sex cord stromal tumor5 (6.3)
22518Epithelial
High grade serous18 (72.0)
Mucinous2 (8.0)
Endometrioid1 (4.0)
Low grade serous2 (8.0)
Undifferentiated1 (4.0)
Non-epithelial
Sex cord stromal tumor1 (4.2)
39475Epithelial
High grade serous75 (79.8)
Low grade serous7 (7.4)
Endometrioid5 5.3)
Clear cell5 (5.3)
Unknown1 (1.1)
Non-epithelial
Germ cell tumor1 (1.1)
41311Epithelial
High grade serous11 (84.6)
Low grade serous1 (7.7)
Non-epithelial
Germ cell tumor1 (7.7)
NA53 (100)Epithelial
High grade serous3 (60.0)
Unknown2 (40.0)
Total215114 (55.1)Epithelial
High grade serous119 (55.3)
Mucinous27 (12.6)
Endometrioid22 (10.2)
Clear cell17 (7.9)
Low grade serous16 (7.4)
Unknown4 (1.8)
Undifferentiated1 (0.5)
Non-epithelial
Sex cord stromal tumor6 (2.8)
Germ cell tumor3 (1.5)
  • FIGO, International Federation of Gynecology and Obstetrics; NA, not available.