Presentation
Diffuse abdominal pain with jaundice.
Patient Data
Saccular thin-walled outpouching arising from the medial aspect of the second part of duodenum (D2) measuring 45 mm, compressing the distal CBD with no wall defect or adjacent collection of gas in the retro-or paraduodenal spaces. The proximal CBD measures 13 mm. Small gallstones are noted.
Uterine leiomyoma of intramural location is noted.
Case Discussion
CT features of a duodenal diverticulum arising from the second part of duodenum compressing the distal CBD with no sign of diverticulitis or perforation most consistent with Lemmel syndrome.
Lemmel syndrome is defined as obstructive jaundice caused by a periampullary duodenal diverticulum compressing the intrapancreatic common bile duct with resultant bile duct dilatation.