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Malignancy percentage in thyroid nodules pre-operatively evaluated by FNAC, utilizing the Bethesda classification.
| Cytopathological diagnoses | Malignancy/number of nodules | Percentage of malignancy | Likelyhood ratio |
|---|---|---|---|
| Bethesda I | 0/1 | 0% | — |
| Bethesda II | 2/21 | 9.5% | 0.7 |
| Bethesda III | 4/8 | 50% | 0.85 |
| Bethesda IV | 9/14 | 64.2% | 1.5 |
| Bethesda V | 11/12 | 91.6% | 10 |
| Bethesda VI | 10/10 | 100% | > 277 |
