Double-balloon enteroscopy for obscure gastrointestinal bleeding: A single center experience in China

Table 1 Characteristics of OGIB patients n (%)

Characteristics	n = 75
Age (yr)	51.5 ± 16.6 (16-86)
Sex (male/female)	37/38
Causes of OGIB
Melena	45 (60.0)
Hematemesis and melena	7 (15.6)
Hemafecia	17 (22.7)
Occult bleeding	6 (8.0)
Duration of symptoms (mo)
< 1	29 (38.7)
1-12	24 (32.0)
> 12	22 (29.3)

OGIB: Obscure gastrointestinal bleeding.

Table 2 DBE findings in OGIB patients

Lesion	Diagnosed by DBE	Diagnosed by other methods	Location			Difference in proximal and distal small bowel
			Stomach and duodenum	Jejunum	Ileum
Tumor	17	4	3	14	4	66.7% vs 19.0% (P = 0.002)
Gastrointestinal stromal tumor	7	12	1	62	1
Non-hodgkin lymphoma	2	3	0	3	2
Adenocarcinoma	3	0	1	1	1
Lipoma	3	0	0	3	0
Brunner adenoma	1	0	1	-	-
Angioma	1	0	0	1	0
Angiodysplasia	7	7	1	9	4	64.3% vs 28.6% (P = 0.128)
Crohn’s disease	7	1	0	2	6	33.3% vs 66.7% (P = 0.132)
Diverticulum	3	2	0	4	1
Henoch-Schönlein purpura	41	0	0	21	2
Single ulcer	0	4	0	1	3
Others	7	5	3	3	4
Un-diagnosed	0	9	-	-	-
Total	45	32	7	36	24	49.3% vs 33.3% (P = 0.047)

¹One case was accompanied with ancylostomiasis;

²One case was accompanied with heterotopic pancreas. DBE: Double-balloon enteroscopy.

Table 3 DBE detection rate of bleeding and duration of symptoms

	Patients	DBE findings	Detection rate (%)	P
Total	75	44	58.7	-
Causes of OGIB
Melena	45	25	55.6	0.551
Hematemesis and melena	7	5	71.4	-
Hemafecia	17	8	47.1	-
Occult bleeding	6	6	100.0	-
Duration of symptoms (mo)
< 1	29	18	62.1	0.562
1-12	24	13	53.8	0.743
> 12	22	13	54.5	0.834

¹Difference between the DBE detection rates of melena and hemafecia;

²Difference between the DBE detection rates of < 1 mo and 1-12 mo;

³Difference between the DBE detection rates of 1-12 mo and > 12 mo;

⁴Difference between the DBE detection rates of < 1 mo and > 12 mo.