Doge cap sign

The doge cap sign is a radiographic sign of pneumoperitoneum. It presents as a triangular-shaped gas lucency in the right upper quadrant on abdominal radiographs due to air in the Morison pouch, which resembles the medieval caps worn by Italian doges.

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Article information

rID: 14909
Section: Signs
Tags: stub, cases
Synonyms or Alternate Spellings:
  • doge's cap sign
  • Morison's pouch sign

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