Free air under the diaphragm on an erect chest X-ray indicates what?
Answer and explanation
Correct answer: B. Perforation of a hollow viscus
- Step 1: Air escapes into the peritoneal cavity when the gut wall is perforated.
Answer
Perforation of a hollow viscus.
Why not the others: Pneumonia, Small bowel obstruction and Pleural effusion do not fit this picture as well.
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