Table 1. Distribution of histological subtype in ovarian cancer patientsa, total and in twin and singleton mothers, respectively.
| Total | Twin mothers | Singleton mothers | |
|---|---|---|---|
| No. (%) | No. (%) | No. (%) | |
| Epithelial | 5204 (92.8) | 112 (88.2) | 5092 (92.9) |
| Serous | 2639 (47.1) | 61 (48.0) | 2578 (47.1) |
| Mucinous | 1020 (18.2) | 20 (15.7) | 1000 (18.3) |
| Endometrioid | 481 (8.6) | 6 (4.7) | 475 (8.7) |
| Clear cell | 243 (4.3) | 5 (3.9) | 238 (4.3) |
| Other/unspecified adenocarcinoma | 821 (14.6) | 20 (15.7) | 801 (14.6) |
| Non-epithelial | 291 (5.2) | 11 (8.7) | 280 (5.1) |
| Stromal | 108 (1.9) | 9 (7.1) | 99 (1.8) |
| Germ cell | 109 (1.9) | 1 (0.8) | 108 (2.0) |
| Sarcomas | 74 (1.3) | 1 (0.8) | 73 (1.3) |
| Unspecified | 111 (2.0) | 4 (3.1) | 107 (2.0) |
| Total | 5606 (100) | 127 (100) | 5479 (100) |
a
Aged 20–74 years at date of diagnosis.