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Diagnosis by US (Rows) vs. diagnosis by FNA cytology (Columns)
| Diagnosis by ultrasonography | FNA cytology diagnosis | ||
|---|---|---|---|
| Benign | Malignant | Total | |
| Benign | 122 (98.38%) | 2 (1.6%) | 124 (100%) |
| Malignant | 4 (44.4%) | 5 (55.6%) | 9 (100%) |
| Total | 126 (94.7%) | 7 (5.3%) | 133 (100%) |
Ultrasonography can predict benign thyroid lesions with high Sensitivity (96.82%), Specificity (71.42%), PPV (98.38%) and NPV (55.55%), PPV: positive predictive value, NPV: negative predictive value
