Table 1 Mean ± SD of body weight, colon surface area (length X width in cm), count of colonic tumours by gross and dissecting microscope, number of tumour/colon surface area ratio (NT/CS), numbers and median surface areas of large (≥4 crypts/focus) and flat ACFs, adenoma and adenocarcinoma in the different study groups

231.57 ± 20.01

221.97 ± 23.01

179.6 ± 15.64^b,d

19.1 ± 2.2

18.89 ± 3.43

17.81 ± 1.84^a

Gross

ND

7.2 ± 2.9

12.5 ± 3.21^d

Dissecting Microscope

ND

15.4 ± 5.1

24.8 ± 5.9^d

Total

N/A

23.1 ± 3.7

35.3 ± 4.1^d

N/A

1.33 ± 0.4

1.95 ± 0.2^c

Dissecting microscope (×20 magnification)

large ACF

Numbers

1.1 ± 0.2

69.4 ± 10.2^b

143.2 ± 26.1^b,d

Median surface area (mm²)

4.1 (range 2.4–7.1)

29.7 (range 7.3–42.4)^b

85.3 (range 7.9–133.3)^b,d

Flat ACF

Numbers

ND

18.4 ± 7.3

31.2 ± 9.6^c

Median surface area (mm²)

N/A

21.2 (range 8–51.7)^b

69.4 (range 9.3–91.8) ^d

Light microscope

MDF (×200 magnification)

Numbers

ND

17.4 ± 3.1

29.1 ± 3.6^d

Median surface area (μm²)

N/A

161.5 (range 12.2–352.9)

596.4 (range 142.8–966.3)^d

Adenoma (×100 magnification)

Numbers

ND

9.8 ± 3.1

11.6 ± 2.8

Median surface area (μm²)

N/A

353.6 (range 101.7–507.8)

728.3 (range 274.8–1396.7)^d

Adenocarcinoma (×100 magnification)

Numbers

ND

16.7 ± 4.1

82.6 ± 15.7^d

Median Surface area (μm²)

N/A

107.9 (range 48–251.7)

711.8 (range 222.8–1808.4)^d