title: Uncommon cases of foreign bodies in the esophagus--duplex coins.
mesh_terms: D002648:Child; D002675:Child, Preschool; D004945:Esophagoscopy; D004947:Esophagus; D005547:Foreign Bodies / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008670:Metals; D011859:Radiography
chemical_list: D008670:Metals