Table 3. Ultrasonographic diagnoses, cytological diagnoses, and BRAF mutation analyses of 29 thyroid nodules with the repeated fine-needle aspiration according to final results.
| BRAF mutation analysis | ||
|---|---|---|
| Negative (n = 24) | Positive (n = 5) | |
| US diagnosis | ||
| Benign (n = 5) | NH (1), NSBN (4) | 0 |
| Probably benign (n = 8) | FA (1), NH (1), NSBN (6) | 0 |
| Indeterminate (n = 4) | NSBN (3) | PTC (1) |
| Suspicious for malignancy (n = 7) | MTC (1), NSBN (5) | PTC (1) |
| Malignant (n = 5) | PTC (2) | PTC (3) |
|
Cytological diagnosis (Bethesda category) |
||
| I (n = 2) | PTC (1), NSBN (1) | 0 |
| II (n = 15) | FA (1), NSBN (14) | 0 |
| III (n = 4) | PTC (1), NSBN (3) | 0 |
| IV (n = 0) | 0 | 0 |
| V (n = 4) | NH (2) | PTC (2) |
| VI (n = 4) | MTC (1) | PTC (3) |
Note.—Numbers in parentheses are prevalence of each item. US, ultrasonography; NH, nodular hyperplasia; NSBN, Non-surgical benign nodules, which were finally determined by repeated fine-needle aspiration cytology or fine-needle aspiration cytology and follow-up ultrasonographic findings. FA, follicular adenoma; MTC, medullary thyroid carcinoma; PTC, papillary thyroid carcinoma; FTC, follicular thyroid carcinoma.