title: Respiratory obstruction due to a round worm. Case report.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D001196:Ascariasis / Q000150:complications*; D002675:Child, Preschool; D006801:Humans; D007442:Intubation, Intratracheal; D009305:Nasopharynx / Q000382:microbiology; D013771:Tetralogy of Fallot / Q000601:surgery; D014132:Trachea