Ansa pancreatica as a predisposing factor for recurrent acute pancreatitis

Table 4 Causes of pancreatitis and ansa pancreatica

Cause	All patients with acute pancreatitis (n = 73)	Patients with single-episode acute pancreatitis (n = 55)	Patients with recurrent acute pancreatitis (n = 18)
Gallstones	19 (26.0)	18 (33.0)	1 (5.6)
Alcohol	14 (19.0)[2]	12 (22.0)[1]	2 (11.0)[1]
Idiopathic	10 (14.0)[1]	6 (11.0)	4 (22.0)[1]
Iatrogenic	6 (8.2)	6 (11.0)	0 (0)
Pancreas divisum1	6 (8.2)	1 (1.8)	5 (28.0)
Autoimmunity2	4 (5.6)	2 (3.6)	2 (5.6)
Meandering main pancreatic duct3	3 (4.2)	1 (1.8)	2 (11.0)
Pancreaticobiliary maljunction	1 (1.4)	1 (1.8)	0 (0)
Alcohol and hyperlipidemia combined	1 (1.4)	1 (1.8)	0 (0)
Choledocal cyst, pancreaticobiliary maljunction, and pancreas divisum combined	1 (1.4)	1 (1.8)	0 (0)
Cholesterol embolism	1 (1.4)	1 (1.8)	0 (0)
Crohn’s disease	1 (1.4)	1 (1.8)	0 (0)
Drug induced	1 (1.4)	1 (1.8)	0 (0)
Hyperlipidemia	3 (4.2)	2 (3.6)	1 (5.6)
Hypothermia	1 (1.4)	1 (1.8)	0 (0)
Sphincter of Oddi dysfunction	1 (1.4)	0 (0)	1 (5.6)

Values are presented as the n (%); values in square brackets represent the number of subjects with ansa pancreatica.

¹Diagnosed according to the criteria used in a previous study[8];

²Diagnosed according to the Asian Criteria of Autoimmune Pancreatitis revised in 2008[27];

³Diagnosed according to the criteria used in a previous study[9].