Short-type single balloon enteroscope for endoscopic retrograde cholangiopancreatography with altered gastrointestinal anatomy

Table 1 Baseline characteristics of the patients n (%)

	Billroth-II gastrectomy	Roux-en-Y gastrectomy	Roux-en-Y hepatico-jejunostomy	Total No. of SIF-Y0004-assisted ERCP
	(n = 8)	(n = 21)	(n = 2)	(n = 31)
Age1, mean (range), yr	75.4 (62-82)	71.3 (50-85)	65 (65)	72.0 (50-85)
Sex2:
Male	5 (83)	13 (93)	2 (100)	20 (91)
Female	1 (17)	1 (7)	0 (0)	2 (9)
Reasons for surgery1
Gastric ulcer	2 (25)	0 (0)	0 (0)	2 (6.5)
Duodenum ulcer	2 (25)	2 (9.5)	0 (0)	4 (13)
Carcinoma of the stomach	4 (50)	19 (90.5)	0 (0)	23 (74)
Carcinoma of the pancreas	0 (0)	0 (0)	2 (100)	2 (6.5)
Reasons for ERCP1
AOSC (due to CBD stone)	1 (12.5)	1 (5)	0 (0)	2 (6.5)
Carcinoma of the pancreas	2 (25)	0 (0)	0 (0)	2 (6.5)
Carcinoma of the gallbladder	1 (12.5)	0 (0)	0 (0)	1 (3.3)
CBD stone	3 (37.5)	14 (66)	2 (100)	19 (61)
IPMN	0 (0)	1 (5)	0 (0)	1 (3.3)
IPNB suspected	0 (0)	1 (5)	0 (0)	1 (3.3)
Metastasis of L/N in porta hepatis	1 (12.5)	4 (19)	0 (0)	5 (16)

¹No. of procedures;

²No. of patients. AOSC: Acute obstructive suppurative cholangitis; CBD: Common bile duct; IPMN: Intraductal papillary mucinous neoplasm; IPNB: Intraductal papillary neoplasm of the bile duct; ERCP: Endoscopic retrograde cholangiopancreatography.