Fig. 3
From: Imaging of non-neoplastic duodenal diseases. A pictorial review with emphasis on MDCT
Duodenal diverticula in different patients. a Anteroposterior image from a single-contrast upper gastrointestinal series shows a typical outpouching (*) arising from descending duodenum. b Magnetic resonance cholangiopancreatography shows a heterogeneous outpouching (large arrow) in the papillary region. Note common bile duct (arrow) and proximal Wirsung duct (arrowhead). c Axial CT demonstrates two duodenal diverticula (arrows) in the periampullary region (air-filled) and fourth portion of the duodenum (with air-fluid level). d Axial CT reveals a diverticulum (arrow) that contains debris in the third portion of the duodenum. Air bubbles inside the lesion are virtually pathognomonic for a duodenal diverticulum