Case Report: Occult gastric corrosion of a brass pendant during endoscopic retrieval in a child

Despite having a normal appearance, metallic foreign bodies may weaken internally after 48-72 h (2-3 days) of gastric exposure. Hence, endoscopists should anticipate hidden corrosion and grasp the thickest, most reinforced area during removal while considering mechanical stress at esophageal narrowing sites to ensure safe retrieval.