Table 1.
Baseline information and DECT images characteristics of PTC patients
| Total (n = 406) |
LLNM (−) (n = 278) |
LLNM (+) (n = 128) |
P value | |
|---|---|---|---|---|
| Agea | .179 | |||
| ≤ 55 | 283 (69.7) | 188 (67.6) | 95 (74.2) | |
| > 55 | 123 (30.3) | 90 (32.4) | 33 (25.8) | |
| Sex, n (%) | .146 | |||
| Female | 322 (79.3) | 226 (70.2) | 96 (29.8) | |
| Male | 84 (20.7) | 52 (61.9) | 32 (38.1) | |
| Location | .493 | |||
| Left lobe | 189 (46.6) | 127 (67.2) | 62 (32.8) | |
| Right lobe | 193 (47.5) | 132 (68.4) | 61 (31.6) | |
| Isthmus | 24 (5.9) | 19 (79.2) | 5 (20.8) | |
| HT, n (%) | .270 | |||
| Negative | 323 (79.6) | 217 (67.2) | 106 (32.8) | |
| Positive | 83 (20.4) | 61 (73.5) | 22 (26.5) | |
| Nodular Goiter, n (%) | .940 | |||
| Negative | 277 (68.2) | 190 (68.6) | 87 (31.4) | |
| Positive | 129 (31.8) | 88 (68.2) | 41 (31.8) | |
| Cystic degeneration | .047 | |||
| Negative | 257 (63.3) | 215 (83.7) | 42 (16.3) | |
| Positive | 149 (36.7) | 63 (42.3) | 86 (57.7) | |
| Calcification | .000 | |||
| Negative | 321 (79.0) | 257 (80.1) | 64 (19.9) | |
| Positive | 85 (21.0) | 21 (24.7) | 64 (75.3) | |
| ETE | .000 | |||
| Negative | 302 (74.4) | 268 (88.7) | 34 (11.3) | |
| Positive | 104 (25.6) | 10 (9.6) | 94 (90.4) |
DECT Dual-energy computed tomography, PTC Papillary thyroid carcinoma, LLNM Lateral cervical lymph node metastasis, HT Hashimoto’s thyroiditis, ETE Extrathyroidal extension
a We divided the patients into two groups based on age using 55-year-old as a cutoff value according to the 8th AJCC staging systems