title: Chronic stridor in a child: CT diagnosis of pulmonary vascular sling.
abstract: A child without chronic stridor and tracheal narrowing was considered to have a primary tracheal abnormality. Computed tomography (CT) identified an aberrant left pulmonary artery originating from the right pulmonary as the cause of the tracheal abnormality. The advantages of CT over conventional studies are discussed.
mesh_terms: D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D012135:Respiratory Sounds / Q000209:etiology*; D014057:Tomography, X-Ray Computed; D014132:Trachea / Q000002:abnormalities