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Leaping dolphin sign

The leaping dolphin sign (also known as the diaphragm muscle slip sign) may be seen in pneumoperitoneum on a supine abdominal radiograph. It represents the outlining of the diaphragmatic muscle slips by free intraperitoneal gas and usually requires a moderate to large volume of pneumoperitoneum 1-4.

History and etymology

It was first described by Cho and Baker in 1997 1.

Inspired signs
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Article information

rID: 68458
Section: Signs
Synonyms or Alternate Spellings:
  • Dolphin sign
  • Diaphragm muscles slip sign
  • Diaphragmatic muscles slip sign
  • Diaphragmatic muscle slip sign
  • Diaphragm muscle slip sign
  • Leaping dolphins sign

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Cases and figures

  • Figure 1: photograph - leaping dolphins
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  • Case 1
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