Table 1. Patient and tumor characteristics.
| n = 408 (100%) | |
| Age, years | |
| Mean (range) | 61.2 (26.7-80.5) |
| Histotype | |
| Low grade endometrioid | 160 (39.2) |
| High grade endometrioid | 112 (27.5) |
| Serous | 65 (15.9) |
| Clear cell | 40 (9.8) |
| Mixed EEC-SEC | 9 (2.2) |
| Mixed EEC-CCC | 10 (2.5) |
| Other | 12 (2.9) |
| Stage | |
| IA | 54 (13.2) |
| IB | 73 (17.9) |
| II | 105 (25.7) |
| III | 176 (43.1) |
| Specimen type | |
| Hysterectomy specimen | 394 (96.6) |
| Curettage/biopsy | 13 (3.2) |
| Lymph node | 1 (0.2) |
Abbreviations: EEC, endometrioid endometrial cancer; SEC, serous endometrial cancer; CCC, clear cell carcinoma.