Table 3 Etiology of LGIB

Haemorrhoids

236 (36.4)

56 (24.8)

180 (42.6)

Diverticular disease

211 (32.5)

106 (46.9)

105 (24.8)

Colorectal malignancy

98 (15.1)

32 (7.6)

66 (15.6)

Colitis

39 (6.0)

7 (3.1)

32 (7.6)

Radiation proctitis

21 (3.2)

6 (2.7)

15 (3.5)

SRUS

11 (1.7)

5 (2.2)

6 (1.4)

Postoperative bleeding^a

9 (1.4)

3 (1.3)

6 (1.4)

Perianal disease^b

4 (0.6)

1 (0.4)

3 (0.7)

Rectal prolapse

1 (0.1)

0 (0)

1 (0.2)

Abernathy lesion

1 (0.1)

1 (0.4)

0 (0)

Small bowel bleed

2 (0.3)

2 (0.9)

0 (0)

Unknown (includes AVM)

16 (2.4)

7 (3.1)

9 (2.1)