2.
Characteristics of patients
| Characteristics | Case
n = 1,587 (%) |
CLNM+/- | LLNM+/- |
| Positive (%) | Positive (%) | ||
| PTMC: papillary thyroid microcarcinoma; HT: Hashimotos thyroiditis;
CLNM: Central lymph node metastasis; LLNM: Lateral neck lymph node metastasis; +, Positive; -, Negative. | |||
| Gender | |||
| Female | 1251 (78.8) | 351/900 (28.1) | 53/1198 (4.2) |
| Male | 336 (21.2) | 140/196 (41.7) | 20/316 (6.0) |
| Age, mean±SD (years) | 45.7±9.4 | ||
| < 45 | 726 (45.7) | 259/467 (35.7) | 40/686 (5.5) |
| ≥ 45 | 861 (54.3) | 232/629 (26.9) | 33/828 (3.8) |
| PTMC with HT | |||
| Yes | 333 (21.0) | 105/228 (31.5) | 18/315 (5.4) |
| No | 1254 (79.0) | 386/868 (30.8) | 55/1199 (4.4) |
| Tumor size, mean±SD (mm) | 5.9±2.5 | ||
| > 6 | 586 (36.9) | 256/330 (43.7) | 45/541 (7.7) |
| ≤ 6 | 1001 (63.1) | 235/766 (23.5) | 28/973 (2.8) |
| Extrathyroidal extension | |||
| Yes | 1039 (65.5) | 372/667 (35.8) | 63/976 (6.1) |
| No | 548 (34.5) | 119/429 (21.7) | 10/538 (1.8) |
| Tumor location | |||
| Multifocal letion | 573 (36.1) | 237/336 (41.4) | 44/529 (7.7) |
| Solitary letion | 1014 (63.9) | 266/748 (26.2) | 29/985 (2.9) |
| Upper third | 312 (30.8) | 72/240 (23.1) | 15/297 (4.8) |
| Middle third | 268 (26.4) | 62/206 (23.1) | 3/265 (1.1) |
| Lower third | 407 (40.1) | 126/281 (31.0) | 11/396 (2.7) |
| Isthmus | 27 (2.7) | 6/21 (22.2) | 0/27 (0) |
| Bilateralism | |||
| Yes | 378 (23.8) | 177/201 (46.8) | 29/349 (7.7) |
| No | 1209 (76.2) | 314/895 (26.0) | 44/1165 (3.6) |
| Subtype | |||
| Classical | 1474 (92.9) | 450/1024 (30.5) | 68/1406 (4.6) |
| Follicular variant | 102 (6.4) | 36/66 (35.3) | 5/97 (5.0) |
| Hürthle cell variant | 11 (0.7) | 5/6 (45.5) | 0/11 (0) |