Table 1.
Characteristics of the study group.
| Feature | Total (n = 1466) |
|---|---|
| Gender, n (%) | |
| Female | 1269 (86.6%) |
| Male | 197 (13.4%) |
| Median age, years (Q1–Q3; range) | 51.0 (39.0–59.8; 15–85) |
| Age at diagnosis, ≥ 55 years, n (%) | 560 (38.2%) |
| Median tumor size, mm (Q1–Q3; range) | 9.0 (5.0–16.0; 0.0–130) |
| TC main type, n (%) | |
| FTC | 34 (2.3%) |
| Oxyphilic | 4 (0.3%) |
| PDTC | 42 (2.9%) |
| PTC | 1386 (94.5%) |
| Multifocality, n (%) | |
| No | 1088 (74.2%) |
| Yes | 378 (25.8%) |
| Extrathyroidal extension, n (%) | |
| No | 1176 (80.2%) |
| Minor | 267 (18.2%) |
| Gross | 23 (1.6%) |
| Angioinvasion, n (%) | |
| No | 1367 (93.2%) |
| Yes | 99 (6.8%) |
| Tumor stage, n (%) | |
| pT0 | 2 (0.1%) |
| pT1a | 859 (58.6%) |
| pT1b | 333 (22.7%) |
| pT2 | 168 (11.5%) |
| pT3a | 77 (5.3%) |
| pT3b | 11 (0.8%) |
| pT4a | 12 (0.8%) |
| pT4b | 4 (0.3%) |
| Node stage, n (%) | |
| N0a | 770 (52.5%) |
| N0b | 478 (32.6%) |
| N1a | 150 (10.2%) |
| N1b | 68 (4.6%) |
| Distant metastasis, n (%) | |
| M0 | 1432 (97.7%) |
| M1 | 34 (2.3%) |
| TNM stage, n (%) | |
| I | 1342 (91.5%) |
| II | 98 (6.7%) |
| III | 4 (0.3%) |
| IVa | 3 (0.2%) |
| IVb | 19 (1.3%) |
| ATA initial risk, n (%) | |
| Low | 959 (65.4%) |
| Intermediate | 416 (28.4%) |
| High | 91 (6.2%) |
TC, thyroid cancer; FTC, follicular thyroid carcinoma; PDTC, poorly differentiated thyroid carcinoma; PTC, papillary thyroid carcinoma; ATA, American Thyroid Association; TNM, tumor node metastasis.