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FNAB efficacy according to deep lobe extension.
| Extension (n = 28) | No extension (n = 166) | |
|---|---|---|
| Sensitivity (%) | 80 | 63.15 |
| Specificity (%) | 82.35 | 90.34 |
| PPV (%) | 72.72 | 46.15 |
| NPV (%) | 87.5 | 94.92 |
| Accuracy (%) | 81.48 | 87.19 |
FNAB, fine needle aspiration biopsy; PPV, positive predictive value; NPV, negative predictive value.
