Table 1.
Clinical, ultrasound and cytopathological characteristics of thyroid nodules.
| n = 2809 | |
| Age (years) | 51.9 ± 14.3 |
| Sex (%) | |
| Male | 17.3 |
| Female | 82.7 |
| Nodule size (mm) | 21.8 ± 12.3 |
| Nodule size category (%) | |
| <20 mm | 49.2 |
| ≥20–<40 mm | 40.1 |
| ≥40 mm | 10.7 |
| Palpable (%) | |
| Yes | 47.3 |
| No | 52.7 |
| Echogenicity (%) | |
| Hyperechoic | 8.1 |
| Isoechoic | 33.9 |
| Hypoechoic | 58 |
| Composition (%) | |
| Mixed cystic and solid | 29.6 |
| Solid | 70.4 |
| Margins (%) | |
| Regular | 96 |
| Irregular | 4 |
| Microcalcifications (%) | |
| Absent | 92.7 |
| Present | 7.3 |
| Bethesda classification (%) (n = 2308) | |
| I | 4.3 |
| II | 81.2 |
| III | 6.1 |
| IV | 5.3 |
| V | 0.9 |
| VI | 2.2 |
Data are the mean ± SD and the number (percentage) for categorical variables.