A halo sign or double ring sign can be seen which eludes towards the foreign body being a button battery. In addition, there are irregularities along the borders of the battery, suggestive of corrosion.

Aug 14, 2023 · Button batteries have a distinctive appearance with a step-off seen in the lateral view and a "double-density" or halo sign noted on the A-P view. [12] Disc batteries can often be mistaken for coins, so care should be taken to make an accurate diagnosis.

A frontal radiograph should demonstrate the so-called “double rim” or “halo” sign which distinguishes a button battery from a coin (the latter appearing solid) , although there is a case report of a false-positive halo sign following ingestion of two coins which stacked together immediately superior to the gastro-oesophageal junction ...

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.

A button battery in the oesophagus has to be urgently removed as major corrosive injury can occur within 2 h of ingestion. 1 In case of multiple coin ingestion or unclear history from parent/patient, anteroposterior (AP) and lateral radiographs may both help in differentiating coins from button batteries.

Jul 18, 2022 · Halo sign (double ring sign) in AP view and step-off sign in the lateral view of the x-ray are pathognomonic for button battery ingestion compared to a coin. An urgent oesophagoscopy for battery removal needed.

Button batteries are identifiable by a ‘halo’ sign on AP and sometimes a ‘step-off’ sign on lateral X-rays.1

Get an x-ray and look for the “halo- sign” and/or “step-off sign” The negative battery pole, identified as the narrowest side on the lateral x-ray, causes the most severe, necrotic injury. 20 mm lithium button battery are most frequently involved in esophageal injuries.

Both neck radiographs showed a double-ring opaque shadow. The first child had a button battery eroding into his oesophagus. The second case is an ideally impacted stack of coins of different sizes that mimic a double-ring shadow, better known as a …

Sep 26, 2018 · Look for the “double shadow” or “halo” appearance on X-ray (shown in Figure 2). These findings support the diagnosis of disc battery ingestion rather than a coin, though the absence of a “halo” does not rule out battery ingestion.