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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.