Swallowed button batteries
Swallowed foreign bodies. History of deliberate self harm.
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There are 2 metallic foreign bodies projected within the mid oesophagus in keeping with ingested button batteries. The lateral projection confirms they are not in the trachea.
No associated mediastinal gas or pneumothorax. The lungs are clear. Sternal wires in keeping with prior surgery for congenital heart disease.
In general oesophageal foreign bodies are oriented in the coronal plane where as trachea foreign bodies are oriented in the sagittal plane.
CT showed no evidence of perforation. Oesophagoscopy demonstrated mucosal necrosis.