The risk of malignancy index (RMI)
| Criteria considered | Score awarded | Score |
|---|---|---|
| Menopausal status | ||
| Premenopausal | 1 | A (1 or 3) |
| Postmenopausal | 3 | |
| Ultrasound features | ||
| Multiloculated cyst | None of these features, 0 | B (0, 1, or 3) |
| Solid areas | One feature, 1 | |
| Bilaterality | More than one feature, 3 | |
| Ascites | ||
| Metastasis | ||
| Serum CA125 concentration (IU/ml) | Absolute concentration of CA125 | C |
| RMI | A×B×C |