Table 7. Accuracy of investigations to detect malignancy.
| Tests | No. | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Accuracy (%) |
|---|---|---|---|---|---|---|
| Ultrasound | 154 | 100 | 97 | 69 | 100 | 97 |
| Fine-needle aspiration | 289 | 49 | 97 | 84 | 84 | 84 |
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