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Table 1 Baseline characteristics of 132 patients with ESCC a

From: Prognostic analysis of esophageal cancer in elderly patients: metastatic lymph node ratio versus 2010 AJCC classification by lymph nodes

Characteristics Cases (n, %)
Age (mean ± SD, yr) 73.6 ± 2.6
Gender  
  Female 11 (8.3)
  Male 121 (91.7)
Tumor size (mean ± SD, cm) 4.6 ± 1.7
Tumor location  
  Upper 6 (4.5)
  Middle 55 (41.7)
  Lower 71 (53.8)
Histologic grade  
  Well 17 (12.9)
 Moderately 81 (61.4)
  Poorly 34 (25.7)
Tumor grade  
  T1 19 (14.4)
  T2 16 (12.1)
  T3 89 (67.4)
  T4 8 (6.1)
N stage  
  N0 58 (43.9)
  N1 42 (31.8)
  N2 18 (13.7)
  N3 14 (10.6)
TLN (mean ± SD, n) 22.7 ± 9.7
NMLN (mean ± SD, n) 2.2 ± 3.7
MLNR  
  MLNR0 (0) 58 (43.9)
  MLNR1 (>0, ≤0.1) 40 (30.3)
  MLNR2 (>0.1, ≤0.3) 19 (14.4)
  MLNR3 (>0.3) 15 (11.4)
  1. aESCC, esophageal squamous cell carcinoma; MLNR metastatic lymph node ratio; NMLN, number of metastatic lymph nodes; TLN, total lymph node.