Table 3 Histopathological description of the four tissue groups

CRC (tumor) (n = 99)

Location

n

(%)

Tumor stage^b

n

(%)

 Right colon

49

(49.5%)

 I

7

(7.1%)

 Left colon

48

(48.5%)

 II

41

(41.4%)

 Rectum

2

(2.0%)

 III

43

(43.4%)

 Not reported

0

(0.0%)

 IV

8

(8.1%)

CRC (paired normal tissue) (n = 76)

Location

n

(%)

Tumor stage^b

n

(%)

 Right colon

41

(53.9%)

 I

7

(9.2%)

 Left colon

34

(44.7%)

 II

29

(38.2%)

 Rectum

1

(1.3%)

 III

32

(42.1%)

 Not reported

0

(0.0%)

 IV

8

(10.5%)

Adenomas (n = 96)

Location

n

(%)

Subtype

n

(%)

 Right colon

15

(15.6%)

 Villous

1

(1.0%)

 Left colon

73

(76.0%)

 Tubulovillous

6

(6.3%)

 Rectum

3

(3.1%)

 Tubular

89

(92.7%)

Not reported

5

(5.2%)

Dysplasia

n

(%)

 Mild

11

(11.5%)

 Moderate

55

(57.3%)

 Severe

30

(31.3%)

Diverticula (n = 104)

Location

n

(%)

Inflammation

n

(%)

 Right colon

4

(3.8%)

 Diverticulosis

23

(22.1%)

 Left colon

93

(89.4%)

 Diverticulitis

81

(77.9%)

 Rectum

0

(0.0%)

 Not reported

7

(6.7%)