Presentation
Abdominal pain.
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
From the case:
Rigler sign
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X-ray demonstrates a Rigler sign, of pneumoperitoneum.
From the case:
Rigler sign
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Box highlights positive Rigler sign.
From the case:
Rigler sign
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CT confirms the finding. Lung windows can be helpful in finding free gas in the abdomen.
Case Discussion
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