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Table 2 Comparison of demographic characteristics between Groups A* and B^

From: Synchronous polypectomy during endoscopic diagnosis of colorectal cancer – is the risk of tumour implantation at the polypectomy site significant?

  Group A * (n = 87) Group B^ (n = 194) p-value
Median age (range) 67 (34–92) 70 (32–94) 0.25
Gender 0.348
 Male (%) 61 (70.1%) 124 (63.9%)  
 Female (%) 26 (29.9%) 70 (36.1%)
Tumor site, n (%) 0.838
 Caecum 4 (4.6%) 13 (6.7%)  
 Ascending 5 (5.7%) 21 (10.8)  
 Hepatic Flexure 6 (6.9%) 6 (3.1%)  
 Transverse 2 (2.3%) 5 (2.6%)  
 Splenic Flexure 1 (1.2%) 3 (1.5%)  
 Descending 4 (4.6%) 9 (4.6%)  
 Sigmoid 27 (31.0%) 47 (24.2%)  
 Rectum 38 (43.7%) 90 (46.9%)  
T Stage, n (%) 0.434
 T1 17 (19.5%) 21 (10.8%)  
 T2 15 (17.2%) 37 (19.1%)  
 T3 43 (49.4%) 115 (59.3%)  
 T4 12 (13.8%) 21 (10.8%)  
N Stage, n (%) 0.361
 N0 50 (57.5%) 102 (52.6%)  
 N1 21 (24.1%) 44 (22.7%)  
 N2 16 (18.4%) 48 (24.7%)  
Lympho-vascular Invasion, n (%) 25 (28.7%) 60 (30.9%) 0.688
Peri-neural invasion, n(%) 17 (19.5%) 33 (17.0%) 0.625
  1. Group A* - Patients who had all synchronous polypectomy sites resected
  2. Group B^ - Patients who had synchronous polypectomy sites left in situ