Table 1.
Final pathological results of the nodules divided according to the Bethesda fine-needle aspiration cytology (FNAC) categories.
| Nondiagnostic (n = 32) |
Benign (n = 125) |
AUS (n = 145) |
Suspicious FN (n = 37) |
Suspicious malignancy (n = 78) | Malignancy (n = 273) |
|
|
| ||||||
| NH (n = 182) | 12 | 101 | 55 | 13 | 1 | 0 |
| Thyroiditis (n = 16) | 3 | 6 | 5 | 2 | 0 | 0 |
| FA/HA (n = 17) | 0 | 1 | 5 | 10 | 1 | 0 |
| FTC (n = 25) | 0 | 3 | 10 | 9 | 1 | 2 |
| MTC (n = 9) | 0 | 1 | 6 | 0 | 1 | 1 |
| PTC (n = 440) | 17 | 13 | 64 | 3 | 73 | 270 |
| ATC (n = 1) | 0 | 0 | 0 | 0 | 1 | 0 |
|
| ||||||
| Malignant risk (%) | 53 | 13.6 | 55 | 32 | 97 | 100 |
NH: nodular hyperplasia; FA: follicular adenoma; HA: Hürthle cell adenoma; FTC: follicular thyroid carcinoma; MTC: medullary thyroid carcinoma; PTC: papillary thyroid carcinoma; ATC: anaplastic thyroid carcinoma; AUS: atypia of undetermined significance.