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| Variables | FVPTC (n = 83) | Conventional PTC(n = 166) | P value |
|---|---|---|---|
| Sonographic | |||
| Marked hypoechogenicity | 50(60.2) | 141 (84.9) | <0.001 |
| Irregular margin | 16(19.3) | 67(40.4) | 0.001 |
| Taller than wide shape | 8(9.6) | 16(9.6) | 0.582 |
| Calcification | 11(13.3) | 38(22.9) | 0.071 |
| FN-like/PTC-like | 31(37.3)/52(62.7) | 13(7.8)/153(92.2) | 0.001 |
n, number of patients; FN, follicular neoplasm; FV, follicular variant; PTC, papillary thyroid cancer.
