Table 2. Characteristics and findings of study patients presenting with lower GI bleeding according to age.

Variable %	Neonates (n=1)%	Infants (n=58)%	Children (n=231)%	Adolescents (n=73)%
Sex
Boys	0 (0)	32 (8.8)	139 (38.3)	44 (12.1)
Girls	1 (0.3)	26 (7.2)	92 (25.3)	29 (8)
Presenting symptoms
Hematochezia	0 (0)	56 (15.4)	179 (19.3)	56 (15.4)
Bloody diarrhea	1 (0.3)	16 (4.4)	35 (9.6)	15 (4.1)
Positive occult blood	0 (0)	1 (0.3)	3 (0.8)	2 (0.6)
Colonoscopy findings
Sigmoid colon polyps (	0 (0)	3 (0.9)	80 (23.1)	8 (2.3)
Descending colon petechia )	1 (0.3)	33 (9.5)	42 (12.1)	2 (0.6)
Whitish rectal lesions	0 (0)	8 (2.3)	24 (6.9)	13 (3.8)
Sigmoid and rectal ulcers	0 (0)	2 (0.6)	20 (5.8)	15 (4.3)
Rectal erythematosus lesions	0 (0)	2 (0.6)	16 (4.6)	15 (4.3)
Rectal and sigmoid erosions	0 (0)	1 (0.3)	11 (3.2)	10 (2.9)
Normal mucosa	0 (0)	4 (1.1)	10 (2.9)	3 (0.8)
Diffuse nodularity with edema	0 (0)	3 (0.9)	8 (2.3)	2 (0.6)
Loss of vascular markings and mucosal frangibility	0 (0)	0 (0)	8 (2.3)	2 (0.6)
Aphthous mucosal lesions	0 (0)	0 (0)	7 (2)	0 (0)
Diffuse colitis with pseudopolyp	0 (0)	2 (0.6)	2 (0.6)	1 (0.3)
Anal fissure	0 (0)	0 (0)	2 (0.6)	1 (0.3)
Hemorrhoidal tag	0 (0)	0 (0)	1 (0.3)	1 (0.3)
Pathology findings
Non-specific	0 (0)	20 (5.7)	54 (15.5)	22 (6.3)
Juvenile polyp	0 (0)	2 (0.6)	75 (20.6)	7 (2)
Lymphoid nodular hyperplasia	1 (0.3)	23 (6.6)	41 (11.7)	1 (0.3)
Solitary rectal ulcers	0 (0)	0 (0)	13 (3.7)	12 (3.4)
Ulcerative colitis	0 (0)	1 (0.3)	9 (2.6)	11 (3.2)
Normal	0 (0)	4 (1.1)	11 (3.1)	3 (0.9)
Crohn’s disease	0 (0)	0 (0)	6 (1.7)	10 (2.9)
Allergic colitis	0 (0)	3 (0.9)	1 (0.3)	3 (0.9)
Pseudomembranous colitis (%)	0 (0%)	2 (0.6%)	4 (1.1%)	0 (0%)
Graft-versus-host disease (GVHD) (	0 (0)	0 (0)	5 (1.4)	0 (0)
Post-infection colitis	0 (0)	2 (0.6)	2 (0.6)	1 (0.3)
Proctitis	0 (0)	1 (0.3)	4 (1.1)	0 (0)
Drug-induced colitis	0 (0)	0 (0)	4 (1.1)	1 (0.3)
Hemorrhoidal tag	0 (0)	0 (0)	0 (0)	2 (0.6)
Post-transplant lymphoproliferative disorder	0 (0)	0 (0)	2 (0.6)	0 (0)