Coin vs battery

Case contributed by Leonardo Lustosa

Comparison between an ingested coin (left) and an ingested button battery (right) on frontal radiographs.

Coins are usually homogeneous while button batteries have a circular lucency appearing as a double-ring or halo sign.

Case Discussion

Ingestion of foreign bodies is frequent in the pediatric population, with coins being the most commonly ingested objects.

While a coin is mostly harmless, a battery could injure the patient. Thus, it is essential to identify the object correctly. These are very similar, but batteries usually have a slight step-off in profile and a double-ring or halo appearance when viewed across their diameter. Coins are plain and usually homogeneous.

Original cases are rID: 98824 (coin) and rID: 99637 (button battery).

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