Table 1.
Patient clinical information and grayscale US characteristics of thyroid nodules for 24 patients.
| Characteristic | Benign | Malignant |
|---|---|---|
| Number of nodules | 12 | 12 |
| Age# | 50.9 (31-82) | 44.7 (29-53) |
| Gender | ||
| Female n (%) | 8 (66.7) | 9 (75.0) |
| Male | 4 (33.3) | 3 (25.0) |
| Size | ||
| ≤1cm | 5 (41.7) | 6 (50.0) |
| 1-2cm | 5 (41.7) | 5 (41.7) |
| >2cm | 2 (16.7) | 1 (8.3) |
| Composition | ||
| Cystic | 0 (0.0) | 0 (0.0) |
| Sponge-like | 0 (0.0) | 0 (0.0) |
| Mixed | 0 (0.0) | 0 (0.0) |
| Solid | 12 (100) | 12 (100) |
| Echogenicity | ||
| Anechogenicity | 0 (0.0) | 0 (0.0) |
| Iso- or hyperechogenicity | 4 (33.3) | 0 (0.0) |
| Hypoechogenicity | 8 (66.7) | 4 (33.3) |
| Marked hypoechogenicity | 0 (0.0) | 8 (66.7) |
| Shape | ||
| Wider than tall | 12 (100) | 7 (58.3) |
| Taller than wide | 0 (0.0) | 5 (41.7) |
| Microcalcifcation | ||
| Microcalcifcation | 0 (0.0) | 9 (75.0) |
| No microcalcifcation | 12 (100) | 3 (25.0) |
| Margin | ||
| Well defined | 9 (75.0) | 0 (0.0) |
| Poorly defined | 1 (8.3) | 7 (58.3) |
| Irregularity or lobuling | 1 (8.3) | 2 (16.7) |
| Extracapsular spread | 1 (8.3) | 3 (25.0) |
| TI-RADS classification | ||
| TI-RADS 3 | 6 (50.0) | 1 (8.3) |
| TI-RADS 4 | 6 (50.0) | 11 (91.7) |
unless otherwise specified, data in parentheses are percentages. #Numbers in parentheses are the range.