Annular pancreas: Radiologic features of a case with recurrent acute pancreatitis

A 67-year-old female presented to the emergency department with epigastric and left-upper-quadrant abdominal pain. The patient reported history of multiple episodes of abdominal pain similar in nature over the last 2 years. Computed tomography (CT) and magnetic resonance imaging (MRI) of the abdomen demonstrated acute pancreatitis along with the presence of pancreatic tissue around the descending portion of the duodenum (a characteristic feature of annular pancreas). The findings on different imaging modalities are described.