Table 2 Patient characteristics of the PTC with LLNM and PTC without LLNM groups in the training cohort
Characteristic | Non-LLNM group (% ) | LLNM group (% ) | p |
|---|---|---|---|
n | 1358 | 374 | Ā |
Age (years) | Ā | Ā | 0.016 |
ā¤ā55 | 1126 (82.9) | 330 (88.2) | Ā |
>55 | 232 (17.1) | 44 (11.8) | Ā |
Gender, n | Ā | Ā | 0.0028 |
Female | 1068 (78.6) | 266 (71.1) | Ā |
Male | 290 (21.4) | 108 (28.9) | Ā |
Tumor size (cm) | Ā | Ā | <0.0001 |
c | 515 (37.9) | 60 (16.0) | Ā |
>1 and ā¤ā2 | 709 (52.2) | 199 (53.2) | Ā |
>2 and ā¤ā3 | 133 (9.8) | 99 (26.5) | Ā |
>3 | 1 (0.1) | 16 (4.3) | Ā |
Tumor position | Ā | Ā | <0.0001 |
Upper pole | 377 (27.8) | 151 (40.4) | Ā |
Middle pole | 350 (25.8) | 82 (21.9) | Ā |
Lower pole | 588 (43.3) | 134 (35.8) | Ā |
Isthmus | 43 (3.1) | 7 (1.9) | Ā |
Composition | Ā | Ā | 0.0631 |
Mixed cystic and solid | 9 (0.7) | 7 (1.9) | Ā |
Solid | 1349 (99.3) | 367 (98.1) | Ā |
Internal echo | Ā | Ā | 0.0011 |
Hyper or isoechoic | 17 (1.3%) | 8 (2.2) | Ā |
Hypoechoic | 903 (66.5) | 281 (75.1) | Ā |
Markedly hypoechoic | 438 (32.2) | 85 (22.7) | Ā |
Margins | Ā | Ā | 0.836 |
Well-defined | 101 (7.4) | 26 (7.0) | Ā |
Ill-defined | 1257 (92.6) | 348 (93.0) | Ā |
Shape | Ā | Ā | 0.0737 |
Ā A/Tā<ā1 | 318 (23.4) | 105 (28.1) | Ā |
A/Tāā„ā1 | 1040 (76.6) | 269 (71.9) | Ā |
Microcalcification | Ā | Ā | <0.0001 |
No | 327 (24.1) | 34 (9.1) | Ā |
Yes | 1031 (75.9) | 340 (90.9) | Ā |
Vascularization (blood flow) | Ā | Ā | 0.0002 |
0 | 964 (71.0) | 229 (61.2) | Ā |
1 | 244 (18.0) | 86 (23.0) | Ā |
2 | 106 (7.8) | 51 (13.6) | Ā |
3 | 44 (3.2) | 8 (2.2) | Ā |
Abutment/perimeter | Ā | Ā | <0.0001 |
ā¤ā0.25 | 731 (53.8) | 58 (15.5) | Ā |
>ā0.25 | 627 (46.2) | 316 (84.5) | Ā |
Mulifocality | Ā | Ā | <0.0001 |
No | 930 (68.5) | 172 (46.0) | Ā |
Yes | 428 (31.5) | 202 (54.0) | Ā |
Hashimoto thyroiditis | Ā | Ā | 0.2229 |
Negative | 1056 (77.8) | 279 (74.6) | Ā |
Positive | 302 (22.2) | 95 (25.4) | Ā |
BRAF V600E mutation | Ā | Ā | 0.0570 |
No | 181 (13.3) | 65 (17.4) | Ā |
Yes | 1177 (86.7) | 309 (82.6) | Ā |