The most common cause of pneumoperitoneum is a perforated abdominal organ caused by an ulcer, tumour or trauma. Gastrointestinal endoscopy and peritoneal dialysis catheter placement can also cause abdominal free… Click to show full abstract
The most common cause of pneumoperitoneum is a perforated abdominal organ caused by an ulcer, tumour or trauma. Gastrointestinal endoscopy and peritoneal dialysis catheter placement can also cause abdominal free air. Moreover, there are several thoracic causes, including mechanical ventilation,
               
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