Case: Abdomen radiograph #12758017
Abdomen Beginner
Read this radiograph systematically before revealing the answer. What is the main abnormality?

Image: Hellerhoff via Wikimedia Commons · CC BY-SA 3.0 · source · resized and converted to WebP
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Answer: Pneumoperitoneum (free intraperitoneal gas)
What to look for in pneumoperitoneum (free intraperitoneal gas)
- Lucent crescent beneath the hemidiaphragm(s).
Description by the image author (may be in another language): Perforation bei einer Koloskopie: Massiv freie Luft in der Bauchhöhle und sogar Austritt in die Weichteile der Bauchwand.
Educational case. The diagnosis comes from the image's documented source; the "what to look for" list describes the condition in general and is not a report of this individual image.





