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IGF-1 levels in each group (mean ± SD).
| Group | No. | IGF-1 level (ng/ml) |
|---|---|---|
| 0 | 18 | 200.33±126.51 |
| 1 | 18 | 139.95± 90.27 |
| 2 | 18 | 220.87±131.66 |
| 3 | 20 | 158.79± 61.37 |
| 4 | 17 | 83.39± 67.85 |
Group 0, control group; group 1, patients with hot thyroid nodules; group 2, patients with solid cold thyroid nodules; group 3, patients with cystic cold thyroid nodules; group 4, cystic fluid samples from patients with cystic cold thyroid nodules; IGF-1, insulin-like growth factor-1.
