Table 2 Comparison of clinicopathological variables in the lateral neck node negative and positive group in PTUMC.

From: Risk factors for lateral neck lymph node metastasis in papillary thyroid ultra micro carcinoma with implications for active surveillance

Variables

Lateral neck node Positive group

(n = 89)

Lateral neck node Negative group

(n = 2,915)

P-value

Sex (male: female)

25:64 (28.1%:71.9%)

521:2394 (17.9%:82.1%)

0.014

Age

44.7 ± 11.5

45.8 ± 10.5

0.318

Age ≥ 55 years

15 (16.9%)

629 (21.6%)

0.285

Size (cm)

0.44 ± 0.08

0.40 ± 0.10

< 0.001

Infiltrative type

75 (84.3%)

2270 (77.9%)

0.151

Microscopic ETE

49 (55.1%)

937 (32.1%)

< 0.001

Multiplicity

  

< 0.001

None

59 (66.3%)

2323 (79.7%)

 

Unilateral

10 (11.2%)

306 (10.5%)

 

Bilateral

20 (22.5%)

286 (9.8%)

 

Tumor location

  

< 0.001

Upper pole

42 (47.2%)

765 (26.2%)

 

Mid pole

38(42.7%)

1495 (51.3%)

 

Lower pole

9(10.1%)

655 (22.5%)

 

Psammomatous calcification

43 (48.3%)

674 (23.1%)

< 0.001

Underlying thyroiditis

35 (39.3%)

986 (33.8%)

0.280

Central LN metastasis

57 (64.0%)

645 (22.1%)

< 0.001

Aggressive subtype

8 (9.0%)

17 (0.6%)

< 0.001

  1. PTUMC, papillary thyroid ultra-microcarcinoma; ETE, extrathyroidal extension; LN, lymph node.