title: An adolescent with chest pain.
authors.forename: Krishan
authors.initials: K
authors.lastname: Kumar
authors.forename: M
authors.initials: M
authors.lastname: Waseem
mesh_terms: D000293:Adolescent; D002637:Chest Pain / Q000209:etiology*; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000150:complications / Q000175:diagnosis*; D012307:Risk Factors