Utility of the Anterior Oblique-Viewing Endoscope and the Double-Balloon Enteroscope for Endoscopic Retrograde Cholangiopancreatography in Patients with Billroth II Gastrectomy

Table 1

Patient's characteristics.

	AOE (𝑛=65)	control (𝑛=20)
Age (years)
Mean	74.8	68.5
Range	57–92	49–91
Sex
Male	51	14
Female	14	6
Diagnosis
Choledocholithiasis	38	8
Obstructive jaundice	19	6
Pancreatic cancer	5	1
Gallbladder cancer	5
Bile duct cancer	4	1
Hepatocellular carcinoma	2
Carcinoma of papilla of Vater	1	3
Metastatic lymphadenopathy	2
Malignant lymphoma		1
Bile leakage	2
Pancreatic pseudocyst	1
Chronic pancreatitis	2	2
Peribiliary cyst	1
Others	2	4