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CT thorax showing a right sub-diaphragmatic free air (vertical arrows).
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A CT thorax demonstrated multiple pockets of sub-diaphragmatic intraperitoneal free air just anterior to the liver and close to the gastric antrum, raising concern for gastric perforation (Fig. 1).
Contrast-enhanced CT abdomen confirming pockets of free intraperitoneal air just anterior to the liver and close to the gastric antrum (vertical arrows).
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A contrast-enhanced abdominal CT concurred with the above findings of pockets of free intra-abdominal air (Fig. 2).