title: Left thoracic scoliosis configurations. Why so different?
abstract: METHODS
  Patients in the scoliosis screening database were analyzed with respect to curve convexity, severity, and outcome, using standard statistical methods.
  
  
  OBJECTIVE
  This study assessed whether left thoracic scoliosis is always pathologic and inquired why this is the case.
  
  
  BACKGROUND
  Left thoracic scoliosis is more significant than the usual right thoracic pattern, but evidence in the literature is circumstantial.
  
  
  METHODS
  Prospectively collected data from 1979-1990 was analyzed in the natural history database of the school screening program.
  
  
  RESULTS
  Right thoracic pattern was observed in 421 girls, and left thoracic pattern was present in 125 girls. The minimum age at diagnosis was 10 years and the Cobb angle was > 4 degrees. Primary left thoracic patterns were statistically smaller and less progressive.
  
  
  CONCLUSIONS
  The left pattern of scoliosis in the absence of overt neuropathology carries a benign prognosis. This contradictory observation is examined in the light of biological asymmetry.
authors.affiliation: Children's Research Centre, Our Lady's Hospital for Sick Children, Dublin, Ireland.
authors.forename: C J
authors.initials: CJ
authors.lastname: Goldberg
authors.forename: F E
authors.initials: FE
authors.lastname: Dowling
authors.forename: E E
authors.initials: EE
authors.lastname: Fogarty
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D015994:Incidence; D007494:Ireland / Q000453:epidemiology; D011859:Radiography; D012189:Retrospective Studies; D012600:Scoliosis / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000628:therapy; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging*