Lemmel syndrome

Last revised by Dr Yuranga Weerakkody on 15 Nov 2021

Lemmel syndrome is defined as obstructive jaundice caused by a periampullary duodenal diverticulum compressing the intrapancreatic common bile duct with resultant bile duct dilatation.

Patients may present with recurrent episodes of jaundicepancreatitis and/or cholangitis.

Duodenal diverticulum of the second part of duodenum compressing the intrapancreatic part of the common bile duct (CBD) with resultant upstream dilatation of the extra- and intrahepatic bile ducts.

Focal outpouching of the duodenum adjacent to the papilla (usually 2nd part of the duodenum) causing compression of the CBD.

Focal outpouching of the duodenum adjacent to the papilla (usually 2nd part of the duodenum) causing compression of the CBD.

It was initially described by the German physician, Gerhard Lemmel (1902-1987) in 1934 5,6.

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3: annotated axial CT
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  • Case 4
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  • Case 5
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  • Case 6
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