Case: Abdomen radiograph #18426020
Abdomen Beginner
Read this radiograph systematically before revealing the answer. What is the main abnormality?
Image: Scott1751 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): Double wall sign. This is a secondary sign of pneumoperitoneum. Patient is supine, and air within the abdomen and lumen of the bowel accentuate both sides of the bowel wall.
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.
