title: Why mucous plugs commonly cause left lung collapse?
mesh_terms: D001999:Bronchoscopy; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008168:Lung / Q000473:pathology; D009093:Mucus; D001261:Pulmonary Atelectasis / Q000175:diagnosis / Q000209:etiology*