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Table 1 Characteristics according to pathologic PALNM

From: Prognostic significance of enlarged paraaortic lymph nodes detected during left-sided colorectal cancer surgery: a single-center retrospective cohort study

Characteristics Pathologic PALNM (−) (n = 244) Pathologic PALNM (+) (n = 19) p
Preoperative
 Sex Male 158 (94.0%) 10 (6.0%) 0.325
  Female 86 (90.5%) 9 (9.5%)  
 Age (years) 63.61 ± 11.846 63.37 ± 10.761 0.931
 BMI (kg/m2) 22.2 ± 2.7 22.2 ± 2.6 0.929
 ASA 1, 2 224 (92.9%) 17 (7.1%) 0.665
  3, 4 20 (90.9%) 2 (9.1%)  
 Preoperative < 5 160 (94.7%) 9 (5.3%) 0.133
  CEA (ng/mL) ≥ 5 82 (89.1%) 10 (10.9%)  
 Clinical T stage cT1 13 (100%) 0 (0.0%) < 0.001
  cT2 30 (96.8%) 1 (3.2%)  
  cT3 179 (95.2%) 9 (4.8%)  
  cT4 22 (71.0%) 9 (29.0%)  
 Clinical N stage cN0 94 (97.9%) 2 (2.1%) < 0.001
  cN1 75 (98.7%) 1 (1.3%)  
  cN2 75 (82.4%) 16 (17.6%)  
 Radiologic Negative 225 (97.8%) 5 (2.2%) < 0.001
  PALNM Positive 19 (57.6%) 14 (42.4%)  
 Radiologic DM Negative 229 (95.0%) 12 (5.0%) < 0.001
  Other than PALNM Positive 15 (68.2%) 7 (31.8%)  
 Tumor location Colon 107 (93.0%) 8 (7.0%) 0.882
  Rectum 137 (92.6%) 11 (7.4%)  
Operative     
 Surgical procedure Open 6 (60.0%) 4 (40.0%) 0.003
  Laparoscopy 238 (94.1%) 15 (5.9%)  
 Operative time (min) < 180 197 (93.8%) 13 (6.2%) 0.232
  ≥ 180 47 (88.7%) 6 (11.3%)  
Pathologic     
 Tumor size (cm) < 5 130 (96.3%) 5 (3.7%) 0.03
  ≥ 5 113 (89.0%) 14 (11.0%)  
 Lymphovascular Negative 203 (97.6%) 5 (2.4%) < 0.001
  Invasion Positive 41 (74.5%) 14 (25.5%)  
 Perineural Negative 148 (94.9%) 8 (5.1%) 0.146
  Invasion Positive 96 (89.7%) 11 (10.3%)  
 Differentiation w/d, m/d 227 (93.4%) 16 (6.6%) 0.031
  p/d 7 (70.0%) 3 (30.0%)  
  1. Data are presented as mean ± standard deviation or number (percentage)
  2. PALNM Paraaortic lymph node metastasis; BMI Body mass index; ASA American Society of Anesthesiologists; CEA Carcinoembryonic antigen; DM Distant metastasis; w/d Well differentiated; m/d Moderately differentiated; p/d Poorly differentiated