Pseudopneumoperitoneum

Last revised by Dr Vikas Shah on 01 Jun 2022

Pseudopneumoperitoneum describes any gas within the abdominal cavity that masquerades as free intraperitoneal gas or pneumoperitoneum when it is in fact contained within an organ. Correctly identifying pneumoperitoneum is important, but making the diagnosis in error may lead to further unnecessary investigation and possible treatment 1.

Causes of pseudopneumoperitoneum include:

See also

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Cases and figures

  • Case 1: Chilaiditi syndrome
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  •  Case 2: Chilaiditi syndrome (illustrated)
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  • Case 3: properitoneal fat stripe
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  • Case 4: pseudopneumoperitoneum
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  • Case 5: diaphragmatic eventration and Chilaiditi sign
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  • Case 6: pseudo-Rigler sign
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