Table 1.

Colonoscopic findings in 402 patients with minimal bright red bleeding per rectum at Loghman Hakim hospital by age group¹

		Total		Age < 40 yr		Age ≥ 40 yr		P
		Number	Percent	Number	Percent	Number	Percent
Significant lesions	Carcinomas	26	6.5	4	2.3	22	9.8	0.002
	Polyps	30	7.5	8	4.5	22	9.8	0.046
	UC	57	14.2	37	20.9	20	8.9	0.001
	CD	10	2.5	5	2.8	5	2.2	0.700
Insignificant lesions	Hemorrhoids	218	54.2	62	35.0	156	69.3	7.2 e-012
	Anal fissures	57	14.2	38	21.5	19	8.4	0.000
	Diverticulosis	1	0.2	0	0.0	1	0.4	0.560
	SRUS	33	8.2	23	13.0	10	4.4	0.020
	AD	1	0.2	0	0.0	1	0.4	0.560
	Normal	32	8.0	23	13.0	9	4.0	0.001

UC: Ulcerative colitis; CD: Crohn’s disease; SRUS: Solitary rectal ulcer syndrome; AD: Angiodysplasia.

¹patients with more than one lesion were presented in more than one diagnostic category.