Colonoscopic evaluation of hematochezia in low and average risk patients for colorectal cancer: A prospective study

Table 1 Demographic data of patients with hematochezia

Patients (n)	417
Men/women	244/173
Mean age (yr)	50.5 ± 14.6
Range	18-96
< 45 years old	180 (43.2%)
> 45 years old	237 (56.8%)

Table 2 Diagnosis (n = 493) in patients with hematochezia (n = 417)

Diagnosis	n	%
Anal pathology	265	63.54
Polyps	77	18.46
(< 10 mm)	60	14.38
(> 10 mm)	17	4.07
Diverticular diseases	44	10.55
IBD	42	10.07
Normal finding	55	13.18
Carcinomas	6	1.43
Angiodysplasia	4	0.95
Total	493

Table 3 Endoscopic diagnoses in patients with hematochezia

Diagnosis	Age group (yr)				P
	< 45 (n = 180)		> 45 (n = 237)
	n	%	n	%
Anal pathology	103	57.2	162	68.4	< 0.05
Polyps	15	8.3	62	26.2	< 0.0001
Diverticular diseases	0	-	44	18.6	< 0.0001
IBD	29	6.1	13	5.5	< 0.001
Normal finding	35	19.4	20	8.4	< 0.01
Carcinomas	0	-	6	2.5	< 0.05
Angiodysplasia	3	1.6	1	0.4	NS

Table 4 Significant lesions in relationship to age and proximal or distal location of lesions in patients with hematochezia

Significantlesions	Age group (yr)				P	LocationProximal Distal		Tot.
	< 45		> 45
	(n = 180)		(n = 237)
	n	%	n	%	n	n
Polyps	2	1.1	15	6.3	< 0.05	1	16	17
IBD	29	16.1	13	5.5	< 0.001	5	37	42
Carcinomas	0	-	6	2.5	< 0.05	1	5	6
Total	31		34			7	58