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What is the cause of the patient's abdominal pain?
Small bowel obstruction - dilated loops of small bowel with air-fluid levels and string of pearls sign.
What is string of pearls sign?
Present as a row of horizontal or oblique small gas bubbles.
What is the most common cause of small bowel obstruction?
Adhesions from prior operation, infection, etc.
Dilated loops of small bowel centrally with multiple air-fluid levels and string of pearls sign on the erect projection.