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Table 2 Tumour-specific characteristics in patients with colonic and rectal tumours

From: Preoperative endoscopic tattooing to mark the tumour site does not improve lymph node retrieval in colorectal cancer: a retrospective cohort study

  Tattooed group N = 107 Control group N = 143 P
Location in the colon 97 96  
Right colon 40 (41%) 52 (54%) 0.09
Tansverse colon 1 (1%) 3 (3%) --
Left colon 56 (58%) 41 (43%) 0.05
Location in the rectum 10 47 <0.01
Tumour size (cm) 4 (3–5.9) 4.7 (3.25-6) 0.08
Colonic cancer 4.5 (3–6) 5 (3.5-6.5) 0.04
Rectal cancer 3.5 (2.5-3.75) 4 (2.75-6) 0.18
pT Stage in colon cancers a    0.12
Tis 1 (1%) 2 (2%)  
T1 7 (8%) 2 (2%)  
T2 12 (13%) 5 (6%)  
T3 48 (52%) 54 (61%)  
T4 24 (26%) 25 (29%)  
pT Stage in rectal cancers    0.18
Tis 0 0  
T1 0 4 (9%)  
T2 5 (50%) 7 (15%)  
T3 3 (30%) 28 (59%)  
T4 2 (20%) 8 (17%)  
DNA Microsatellite Instability-High 10/97 (10%) 10/96 (10%) --
  1. aIn 13 patients final pathology revealed an adenoma with high grade dysplasia.