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Mercedes-Benz sign (gallbladder)

In the gallbladder, the Mercedes-Benz sign describes a star-shaped pattern of gas-fissuring within gallstones initially described on an abdominal radiograph 2.

Fissures, usually fluid-filled, are present in close to 50% of gallstones. Less than half of these fissured gallstones contain some amount of gas 1. The radiolucency caused by the gas usually appears in a triradiate pattern, mimicking the Mercedes-Benz logo.

Terminology

The terms crow's foot and star‐shaped were previously used to describe fissured gallstones. However, they were replaced by the Mercedes-Benz sign 4

History

In 1796 Friedrich August Walter described stellate fissuring of gallstones in vitro but it was identified in an abdominal x‐ray by Breuer until 1931 4.  

 

Gallbladder and biliary tract pathology
Inspired signs

Article information

rID: 1663
Section: Signs
Synonyms or Alternate Spellings:
  • Mercedes-Benz sign in gallstones

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Cases and figures

  • Figure 1: Mercedes Benz badge
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  • Case 1
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  • Case 3
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  • Case 4
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  •  Case 5
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  • Case 6
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