Oreo cookie sign (heart)

Dr Craig Hacking and A.Prof Frank Gaillard et al.

The Oreo cookie sign refers to the appearance of a pericardial effusion on lateral radiographs of the chest. A vertical opaque line (pericardial fluid) separating a vertical lucent line directly behind the sternum (paracardial fat) anteriorly from a similar lucent vertical lucent line (epicardial fat) posteriorly. It is now more often and better observed on CT.

It should not be confused with the double Oreo cookie sign of SLAP tears 2.

Inspired signs
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Article information

rID: 15498
System: Chest
Section: Signs
Tag: stub
Synonyms or Alternate Spellings:

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Cases and figures

  • Oreo Cakesters co...
    Figure 1: photograph - Oreo cookies
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  • Case 1: x-ray
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  • Case 1: CT
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  • Case 2: constrictive pericarditis and pericardial effusion
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  • Case 3: CT
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  • Case 4
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  • Case 5: penetrating chest trauma
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