Table 1.

Characteristics of Patients with Annular Pancreas Undergoing ERCP

Characteristic	n	%
Sex
Female	33	71.7
Male	13	28.3
Ethnicity
White	40	87.0
African-American	3	6.5
Hispanic	2	4.3
Other	1	2.2
Age (mean α SD)	46.3 ± 17.2
Prior foregut surgery	5	10.9
Indication for ERCP*
Pain / Suspicion of SOD	20	43.5
Idiopathic acute or recurrent acute pancreatitis	17	37.0
Abnormal Imaging†	12	26.1
Elevated liver tests	10	21.7
Chronic pancreatitis	7	15.2
Ampullary mass	2	4.3

SD, standard deviation; SOD, Sphincter of Oddi Dysfunction.

^*many patients have more than one indication for the ERCP, thus the % adds up to >100%.

^†Abnormal imaging consists of the following: annular pancreas (n=5), dilated common bile duct (n=3), pancreas cyst/pseudocyst (n=2), pancreas stricture / pancreas duct dilation (n=1), choledocholithiasis (n=1).