title: An intracranial extramedullary hematopoiesis in a 34-year-old man with beta thalassemia: a case report.
abstract: BACKGROUND
  Extramedullary hematopoiesis occurs in approximately 15% of cases of thalassemia. Intracranial deposits of extramedullary hematopoiesis are an extremely rare compensatory process in intermediate and severe thalassemia.
  
  
  METHODS
  We present an unusual case of an intracranial extramedullary hematopoiesis with a choroid plexus origin in a 34-year-old Caucasian man with beta thalassemia intermedia, who presented with the complaints of chronic headache and rapid progressive visual loss.
  
  
  CONCLUSIONS
  An intracranial extramedullary hematopoiesis, although extremely rare, should be considered as a potential ancillary diagnosis in any thalassemic patient and therefore appropriate studies should be performed to investigate the probable intracranial ectopic marrow before any surgical intervention.
authors.affiliation: Department of Neurosurgery, Al-Zahra Hospital, Isfahan University Of Medical Sciences, Isfahan, Iran. Dr_abbasi_s@yahoo.com.
authors.forename: Homayoun
authors.initials: H
authors.lastname: Tabesh
authors.forename: Ahmad
authors.initials: A
authors.lastname: Shekarchizadeh
authors.forename: Parvin
authors.initials: P
authors.lastname: Mahzouni
authors.forename: Mojgan
authors.initials: M
authors.lastname: Mokhtari
authors.forename: Saeid
authors.initials: S
authors.lastname: Abrishamkar
authors.forename: Salman
authors.initials: S
authors.lastname: Abbasi Fard