Table 2. Baseline clinicopathological characteristics of the study patients.
| Variable | N=416 |
|---|---|
| Extent of operation | |
| Less than total | 343 (82.5) |
| Total | 73 (17.5) |
| Malignancy/NIFTP | 209 (50.2) |
| Tumor size (cm) | 2.4±1.6 (range, 0.5–13.5) |
| ETE | 10 (6.8) |
| NRAS | 49/220 (22.3) |
| BRAFV600E | 14/193 (7.3) |
| Lymphatic invasion | 11/146 (7.5) |
| Vascular invasion | 31/146 (21.2) |
| Perineural invasion | 1/146 (0.7) |
| T category | |
| T1 | 74 (50.7) |
| T2 | 51 (34.9) |
| T3 | 21 (14.4) |
| N category | |
| N1a | 19 (13.0) |
| M category | |
| M1 | 2 (1.4) |
| TNM stage | |
| I | 135 (92.5) |
| II | 10 (6.8) |
| IVb | 1 (0.7) |
Data are expressed as patient’s number (%), or mean ± SD. NIFTP, noninvasive follicular thyroid neoplasm with papillary-like nuclear features; ETE, extrathyroidal extension; T, tumor; N, node; M, metastasis.