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Table 2 Factors associated with nodal skip metastasis

From: Nodal skip metastasis in thoracic esophageal squamous cell carcinoma: a cohort study

  Non-NSM NSM p-value
Number 72 16 -
Age (years)a 63 (57–70) 59 (54–69) 0.64
Sex Male: Female 59:13 12:4 0.50
Advanced liver disease 15 (20.8) 3 (18.8) 0.99
Pulmonary disease 14 (19.4) 3 (18.8) 0.99
Tumor location:    0.02
Upper thoracic esophagus 10 (13.9) 4 (25.0)
Middle thoracic esophagus 28 (38.9) 10 (62.5)
Lower thoracic esophagus 34 (47.2) 2 (12.5)
Tumor differentiation:    0.21
Well 11 (15.3) 5 (31.3)
Moderate 47 (65.3) 10 (62.5)
Poor 14 (19.4) 1 (6.2)
Tumor length (mm)a 50 (40–70) 50 (35–50) 0.22
Preoperative clinical N stage:    0.04
cN+ 35 (48.6) 3 (18.8)
cN0 37 (51.4) 13 (81.2)
Pathologic T stage:    0.99
pT1-pT2 17 (23.6) 4 (25.0)
pT3-pT4 55 (76.4) 12 (75.0)
Harvested lymph nodesa 17 (12–25) 18 (13–23) 0.72
Metastatic lymph nodesa 1 (1–3) 2 (1–5) 0.01
  1. Data expressed as n (%) or amedian(IQR), NSM nodal skip metastasis