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Table 1 Clinicopathological characteristics of the patients with papillary thyroid carcinoma (n = 247)

From: Capsular extension at ultrasound is associated with lateral lymph node metastasis in patients with papillary thyroid carcinoma: a retrospective study

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  
  1. f Fisher’s exact test
  2. NLNM no lymph node metastasis, CLNM central lymph node metastasis, LLNM lateral lymph node metastasis, SD standard deviation; IQR: interquartile range