Toddler whose toy was noted to be missing a battery Pediatric Imaging Gastrointestinal April 23, 2023February 14, 2023 AXR shows a round radiopaque foreign body with a halo and double rim projecting over the antrum of the stomach. The diagnosis was a button battery as a gastrointestinal foreign body. Related Published April 23, 2023February 14, 2023