Ex vacuo cholesterol gallstones

Case contributed by Dr Maxime St-Amant


Acute abdominal pain.

Patient Data

Age: 45 Y
Gender: Male
Modality: CT

Many cholelithiasis containing air centrally are seen in the gallbladder.

Incidentally noted are calcified splenic foci likely related to healed granulomatous infection. 

Case Discussion

Small crevices in the cholelithiasis permits ex vacuo phenomenon of nitrogen gas. Mercedes Benz sign is describes the appearance of the triradiate collection of nitrogen gas. 

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Case Information

rID: 20365
Diagnostic certainty: Almost Certain
System: Hepatobiliary
Inclusion in quiz mode: Included

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