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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