Table 1. Primary diagnosis of patients with the primary complaint of rectal bleeding post FS (n = 528).

Primary diagnosis post FS	Frequency (# of patients)	Percentage (%)
Normal	110	20.8
Hemorrhoids	289	54.7
Anal fissures	21	4
Adenomatous polyps	42	8
IBD	23	4.3
Ulcerative colitis	17	3.2
Crohn’s	6	1.1
Indeterminate proctitis/colitis	9	1.7
Rectal malignancy	12	2.3
Colon malignancy	1	0.2
Other	8	1.7
Missing/no documentation	12	2.3

FS, flexible sigmoidoscopy; IBD, inflammatory bowel disease