Table 1 Clinicopathological characteristics of the patients with papillary thyroid carcinoma (n = 247)
Characteristics | NLNM (n = 152) | CLNM (n = 47) | LLNM (n = 48) | P |
|---|---|---|---|---|
Age (years), mean ± SD | 46.9 ± 11.3 | 39.7 ± 10.9 | 40.1 ± 10.8 | < 0.001 |
  < 45 | 56 (36.8) | 34 (72.3) | 31 (64.6) | < 0.001 |
  ≥ 45 | 96 (63.2) | 13 (27.7) | 17 (35.4) |  |
Sex (male), n (%) | 37 (24.3) | 14 (29.8) | 16 (23.3) | 0.427 |
Hashimoto’s thyroiditis, n (%) | 35 (23.0) | 15 (31.9) | 13 (29.2) | 0.446 |
Tumor size (mm), median (IQR) | 9.4 (7,14) | 15 (10,21) | 18 (14,23.75) | < 0.001 |
  ≤ 10 | 83 (54.6) | 14 (29.8) | 5 (10.4) | < 0.001 |
  > 10 | 69 (45.4) | 33 (70.2) | 43 (89.6) |  |
Tumor location, n (%) | ||||
 Upper third | 29 (19.1) | 8 (17.0) | 9 (18.7) | 0.945f |
 Middle third | 86 (56.6) | 24 (51.1) | 26 (54.2) |  |
 Lower third | 35 (23.0) | 14 (29.8) | 12 (25.0) |  |
 Isthmus | 2 (1.3) | 1 (2.1) | 1 (2.1) |  |
Pathological multifocality, n (%) | ||||
 Single | 129 (84.9) | 35 (74.5) | 37 (77.1) | 0.643 |
 Multiple | 23 (15.1) | 12 (25.5) | 11 (22.9) |  |
Pathological type, n (%) | ||||
 Papillary microcarcinoma | 64 (42.1) | 18 (38.3) | 24 (50.0) | 0.345f |
 Papillary carcinoma | 86 (56.6) | 28 (59.6) | 24 (50.0) |  |
 Medullary carcinoma | 0 | 1 (2.1) | 0 |  |
 Follicular adenocarcinoma | 2 (1.3) | 0 | 0 |  |