title: An unusual cause of stridor.
mesh_terms: D003490:Cyanosis / Q000209:etiology; D006258:Head and Neck Neoplasms / Q000150:complications*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D008297:Male; D009132:Muscles; D009333:Neck; D014133:Tracheal Diseases / Q000209:etiology*