Presentation
A girl brought in to the emergency department by her mother after a suspected foreign body (coin) ingestion.
Patient Data
A round metallic foreign body lies in the midline just above the aortic knob, suggestive of a coin within the esophagus, the coin exceeds the diameter of the trachea, also on the lateral view, the trachea appears anterior to the coin, so that it can not lie within it.
Both lung fields appear clear.
Case Discussion
The metallic foreign body that seen in this case appears homogeneous with smooth borders (differentiated from the button battery which showed the double-ring sign and irregular borders).
In the frontal view, coins in the esophagus project en face (round) whereas those in the trachea project on end (linear).
In children, most often ingested foreign body is a coin.