Retropharyngeal haematoma.
D002675:Child, Preschool; D005547:Foreign Bodies / Q000628:therapy; D006406:Hematoma / Q000150:complications / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007830:Larynx; D008297:Male; D010608:Pharyngeal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D012131:Respiratory Insufficiency / Q000150:complications