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Table 2 Comparison of clinicopathological factors in the ECC-positive and ECC-negative groups

From: Positive detection of exfoliated colon cancer cells on linear stapler cartridges was associated with depth of tumor invasion and preoperative bowel preparation in colon cancer

  ECC-positive group ECC-negative group p value
(n = 20) (n = 80)
Age 67.3 ± 12.0 years old 72.0 ± 9.6 years old N.S
Gender
 M 8 43 N.S
 F 12 37  
Operation method
 Laparoscopic surgery 10 (50 %) 51 (63.8 %) N.S
 Open surgery 10 (50 %) 29 (36.2 %)  
Tumor location
 Cecum 4 (20 %) 13 (16.3 %) N.S
 Ascending colon 9 (45 %) 32 (40 %)  
 Transverse colon 4 (20 %) 24 (30 %)  
 Descending colon 0 (0 %) 2 (2.5 %)  
 Sigmoid colon 3 (15 %) 9 (11.2 %)  
Depth of tumor invasion
 pTis 0 (0 %) 8 (10 %) 0.012
 pT1 0 (0 %) 16 (20 %) (Tis, T1 vs. T2–T4)
 pT2 2 (10 %) 5 (6.2 %)  
 pT3 16 (80 %) 31 (38.8 %)  
 pT4 2 (10 %) 20 (25 %)  
Tumor size (mean ± SE)
  58.6 ± 16.7 mm 49.2 ± 32.6 mm 0.0239
Lymph node metastasis
 pN(−) 13 48 N.S
 pN(+) 7 32  
Distant metastasis
 pM0 1 12 N.S
 pM1 19 68  
cStage
 0 0 7 N.S
 I 2 18  
 II 10 21  
 III 7 21  
 IV 1 13  
Histopathological classification
 Well 8 38 N.S
 Moderately 9 33  
 Poorly 1 6  
 Others 2 3  
Margin from tumor (mean ± SE)
 Oral side 16.7 ± 2.5 cm 14.6 ± 1.1 cm N.S
 Anal side 12.3 ± 1.5 cm 12.8 ± 1.0 cm N.S
Preoperative bowel preparation
 PEG 8 (40 %) 60 (75 %) 0.003
 Others 12 (60 %) 20 (25 %)