title: Mediastinal masses masquerading as common respiratory conditions of childhood: a case series.
abstract: BACKGROUND
  Leukaemia and lymphoma may present with symptoms and signs mimicking common respiratory conditions of childhood such as asthma or croup. The UK National Institute for Clinical Excellence guidelines for referral for suspected cancer state that "the primary healthcare professional should be ready to review the initial diagnosis in patients in whom common symptoms do not resolve as expected" and "must be alert to the possibility of cancer when confronted by unusual symptom patterns" (National Institute for Health and Clinical Excellence, 2005).
  
  
  CONCLUSIONS
  A child with an undiagnosed mediastinal mass presenting with signs and symptoms suggestive of asthma or croup may be given oral systemic steroids. We report four such illustrative cases presenting to a single institution within the last 3 years.
  
  
  CONCLUSIONS
  We highlight key points from the history and examination findings which should lead to review of the original diagnosis, the benefit of early chest X-ray in such cases and the dangers of steroid pretreatment.
authors.affiliation: Paediatric Pulmonology Department, Addenbrooke's Hospital NHS Foundation Trust, Hills Road, Cambridge CB2 0QQ, UK.
authors.forename: A
authors.initials: A
authors.lastname: Saraswatula
authors.forename: D
authors.initials: D
authors.lastname: McShane
authors.forename: D
authors.initials: D
authors.lastname: Tideswell
authors.forename: G A A
authors.initials: GA
authors.lastname: Burke
authors.forename: D M
authors.initials: DM
authors.lastname: Williams
authors.forename: J C
authors.initials: JC
authors.lastname: Nicholson
authors.forename: M J
authors.initials: MJ
authors.lastname: Murray
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000175:diagnosis; D002648:Child; D003440:Croup / Q000175:diagnosis; D003937:Diagnosis, Differential; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis / Q000000981:diagnostic imaging*; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D017410:Practice Guidelines as Topic; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000000981:diagnostic imaging; D011859:Radiography; D012140:Respiratory Tract Diseases / Q000000981:diagnostic imaging