Duodenal Diverticulum

 Location: Medial (70%) descending duodenum in periampullary region, 3rd or 4th portion (26%), lateral (4%) descending duodenum


image Filling defects within diverticulum (food and gas)

image CT: Fluid-filled diverticulum may simulate cystic mass in pancreatic head

image CT usually shows air-fluid level within diverticulum


• Intraluminal diverticula
image “Windsock” appearance: Barium-filled, globular structure of variable length, originating in 2nd portion of duodenum, fundus extending into 3rd portion; outlined by thin, radiolucent line

image CT: Contrast medium and gas within diverticulum, surrounded by contrast in duodenal lumen; separated by thin wall of diverticulum




TOP DIFFERENTIAL DIAGNOSES




• Pancreatic pseudocyst

• Pancreatic cystic tumor

• Perforated duodenal ulcer


CLINICAL ISSUES



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Nov 16, 2016 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on Duodenal Diverticulum

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