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Leaping dolphin sign

Last revised by Dr Yuranga Weerakkody on 03 Jun 2019

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.

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Cases and figures

  • Figure 1: photograph - leaping dolphins
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  • Case 1
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