title: Splenic infarction associated with sickle cell trait at low altitude.
abstract: OBJECTIVE
  Sickle cell trait is widely known to be associated with splenic infarction at high altitudes. Although textbooks and reviews imply that this complication does not occur at low altitudes, we encountered such a case and identified several previous cases in the literature.
  
  
  METHODS
  An 18-year-old woman with sickle cell trait who resided near sea level presented with left upper quadrant abdominal pain and was found to have multiple splenic infarcts. She was otherwise well, with no comorbidities that would predispose to hypoxemia or vascular injury. A review of the literature revealed 12 previously published cases of low-altitude splenic infarction in patients with sickle trait; 7 of those patients had comorbidities that likely predisposed to splenic infarction.
  
  
  METHODS
  None.
  
  
  CONCLUSIONS
  Spontaneous splenic infarction can occur in patients with sickle trait who live at low altitudes. It is unclear whether this complication is rare, or whether it is relatively common but under-recognized.
authors.forename: Mary Beth
authors.initials: MB
authors.lastname: Seegars
authors.forename: Allan S
authors.initials: AS
authors.lastname: Brett
mesh_terms: D000293:Adolescent; D000531:Altitude; D005260:Female; D006801:Humans; D012805:Sickle Cell Trait / Q000150:complications* / Q000175:diagnosis; D013159:Splenic Infarction / Q000175:diagnosis / Q000209:etiology*; D014057:Tomography, X-Ray Computed
keywords: Sickle cell trait; Splenic infarction