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.

Clinical presentation

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

Pathology

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.

Radiographic features

CT

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

MRI
MRCP

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

History and etymology

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

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