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Table 3 Most advanced lesions Identified by screening

From: Comparison between an immunochemical fecal occult blood test and a Guaiac based fecal occult blood test in detection of adenomas and colorectal cancer

 

G-FOBT (%)

I-FOBT (%)

Colonoscopies Findings

 Normal

4 (22.2)

19 (24.6)

 Benign lesions

4 (22.2)

22 (28.6)

 Nonadvanced adenomas

4 (22.2)

20 (26.0)

 Advanced adenomas

4 (22.2)

11 (14.3)

 Invasive Colorectal Cancer

2 (11.1)

5 (6.5)

Total

18 (100.0)

77 (100.0)

Adenomas characteristics

Histology

 LGD: Tubular

5 (62.5)

24 (77.4)

 LGD: Tubulovillous or villous

3 (37.5)

7 (22.6)

Total

8 (100.0)

31 (100.0)

Size

 ≤ 5 mm

2 (25.0)

7 (22.6)

 6-9 mm

4 (50.0)

13 (41.9)

 ≥ 10 mm

2 (25.0)

11 (35.5)

Total

8 (100.0)

31 (100.0)

Number

 < 3

7 (87.5)

22 (70.9)

 ≥ 3

1 (12.5)

9 (29.1)

Total

8 (100.0)

31 (100.0)

Invasive carcinoma stages

 Stage 1

1 (50.0)

4 (80.0)

 Stage 2

1 (50.0)

1 (20.0)

 Stage 3

0

0

Total

2 (100.0)

5 (100.0)