Risk factors for groove pancreatitis:
(1) gastric resection
(2) peptic ulcer disease
(3) chronic duodenitis
(4) pancreatic heterotopia in the duodenum
(5) cyst in the head of the pancreas or duodenal wall
(6) disorder of the distal common bile duct
Clinical and laboratory features:
(1) no or intermittent jaundice
(2) inflammation and/or fibrosis primarily affecting the pancreatic groove,with possible extension into adjacent structures
(3) variable degree of duodenal stenosis
(4) variable elevation of amylase and lipase
Imaging findings:
(1) regular tapering of the pancreatic and common bile ducts
(2) duodenal wall thickening
(3) widening of the space between the distal pancreatic and common bile ducts and duodenal lumen
