title: Dynamic contrast-enhanced MRI findings of acute pancreatitis in ectopic pancreatic tissue: case report and review of the literature.
abstract: BACKGROUND
  Acute pancreatitis in ectopic pancreatic tissue is an uncommon cause of acute abdominal pain and can be difficult to diagnose on imaging. Our aim is to raise awareness and aid in the diagnosis of this entity by highlighting helpful dynamic contrast-enhanced MRI imaging findings.
  
  
  METHODS
  We report a 51-year-old man with acute onset epigastric pain presented to ER. With the presence of elevated serum lipase, the clinical diagnosis of acute pancreatitis was made. Contrast enhanced CT demonstrated normal pancreas and a focal mass at the duodenojejunal flexure, mimicked a neoplasm. Subsequent dynamic contrast enhanced MR images demonstrated enhancement pattern of the lesion similar to the native pancreatic tissue enhancement, a finding raised the possibility of acute pancreatitis in ectopic pancreatic tissue, but tumor was not excluded. Finally, patient undergone surgical bowel resection including the suspected mass that was proved as an ectopic pancreatic tissue on microscopic examination.
  
  
  CONCLUSIONS
  We concluded that findings on dynamic contrast enhanced MR imaging can be characteristic and diagnostic of acute pancreatitis in ectopic pancreatic tissue in the appropriate clinical setting.
authors: Department of Radiology, University of Massachusetts Memorial Medical Center. Worcester, MA, USA. senthurjey@gmail.com.
authors: Senthur J
authors: SJ
authors: Thangasamy
authors: Larry
authors: L
authors: Zheng
authors: Lacey
authors: L
authors: Mcintosh
authors: Paul
authors: P
authors: Lee
authors: Abhijit
authors: A
authors: Roychowdhury
mesh_terms: D000208:Acute Disease; D002828:Choristoma / Q000150:complications / Q000175:diagnosis*; D003287:Contrast Media; D003937:Diagnosis, Differential; D004378:Duodenal Diseases / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007579:Jejunal Diseases / Q000150:complications / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010179:Pancreas; D010195:Pancreatitis / Q000175:diagnosis* / Q000209:etiology
chemical_list: D003287:Contrast Media