Pancreatic stents for the prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis should be inserted up to the pancreatic body or tail

Table 1 Comparison of patient demographic and clinical characteristics n (%)

	Head group (n = 131)	Body/tail group (n = 16)	P value
Age, median (range), yr	71.0 (29-97)	66.5 (26-81)	0.052
Male/female	69/62	11/5	0.29
Pancreatic calcification	4 (3.1)1	1 (6.3)	0.45
Parapapillary diverticulum	38 (29.5)2	5 (31.2)	1.0
Diameter of the MPD, median (range), mm	3.1 (0.7-22.0)	3.7 (1.5-13.8)	0.15
Diagnosis
Left hepatic duct extension	1
Biliary stricture
Benign	5
Malignant
Pancreatic cancer	24	7
Biliary tract cancer	33	3
Hepatocellular carcinoma	3
Obstructive jaundice by metastatic cancer
Barrett’s esophageal cancer		1
Colon cancer	4
Gastric cancer	2
Uterine cancer	1
Bladder cancer	1
Ovarian cancer	1
Suppression of lymph node swelling	1
Central bile duct stone	47	4
Primary sclerosing cholangitis	1	1
Gallbladder adenomyosis	3
IPNB	1
Sphincter of Oddi dysfunction	1
Biliary cysts	1
Lemmel syndrome	1

¹ Data from four cases were not available;

² Data from two cases were not available. MPD: Main pancreatic duct.