title: An elusive and often unsuspected cause of stridor or pneumonia (the esophageal foreign body).
mesh_terms: D001314:Auscultation; D001466:Barium Sulfate; D002675:Child, Preschool; D004947:Esophagus / Q000000981:diagnostic imaging; D005260:Female; D005547:Foreign Bodies / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D008297:Male; D011014:Pneumonia / Q000000981:diagnostic imaging / Q000209:etiology*; D013902:Radiography, Thoracic; D012131:Respiratory Insufficiency / Q000000981:diagnostic imaging / Q000209:etiology*; D014132:Trachea / Q000000981:diagnostic imaging
chemical_list: D001466:Barium Sulfate