Table 1.
Final histological classification of 199 cytologically indeterminate nodules.
| Histological result | Numerosity | |
|---|---|---|
| Benign: n = 130/199 (65%) | FA | 87 |
| HN | 29 | |
| WDT-UMP | 6 | |
| NIFTP | 8 | |
| Malignant: n = 69/199 (35%) | CV-PTC | 24 |
| FV-PTC | 14 | |
| FTC-MI | 16 | |
| FTC-WI | 13 | |
| PTC/FTC | 1 | |
| MTC | 1 | |
FA, follicular adenoma; FTC-MI, minimally invasive follicular thyroid carcinoma; FTC-WI, widely invasive follicular thyroid carcinoma; HN, hyperplastic nodule; CV-PTC, classical variant of papillary thyroid carcinoma; FV-PTC, follicular variant of papillary thyroid carcinoma; MTC, medullary thyroid cancer; NIFTP, noninvasive follicular thyroid neoplasm with papillary-like nuclear features; PTC/FTC, mixed papillary thyroid carcinoma and follicular thyroid carcinoma; WDT-UMP, well-differentiated tumor of uncertain malignant potential.