title: [Cerebral intravascular lymphoma during T CD4+ idiopathic lymphopenia syndrome].
abstract: BACKGROUND
  Intravascular lymphoma is a proliferation of lymphoid cells, usually B cells, in small vessels, predominantly in the nervous system and skin.
  
  
  METHODS
  We report a case of a man with a 3-year history of lymphopenia with no detectable etiology (all viral causes were ruled out) who developed intravascular lymphoma in the cerebral vessels.
  
  
  CONCLUSIONS
  This case was particular as the patient had idiopathic CD4+ lymphopenia. It points out the probable role of immunodepression in the development of lymphomas, particularly in endovascular localizations.
authors.affiliation: Service de Neurologie, Hôpital d'Instruction des Armées Desgenettes, Lyon.
authors.forename: L
authors.initials: L
authors.lastname: Guilloton
authors.forename: A
authors.initials: A
authors.lastname: Drouet
authors.forename: P
authors.initials: P
authors.lastname: Bernard
authors.forename: A
authors.initials: A
authors.lastname: Berbineau
authors.forename: F
authors.initials: F
authors.lastname: Berger
authors.forename: N
authors.initials: N
authors.lastname: Kopp
authors.forename: C
authors.initials: C
authors.lastname: Ribot
mesh_terms: D000368:Aged; D001932:Brain Neoplasms / Q000150:complications* / Q000276:immunology / Q000473:pathology*; D002536:Cerebral Arteries; D002550:Cerebral Veins; D004830:Epilepsy, Tonic-Clonic / Q000209:etiology; D017809:Fatal Outcome; D006801:Humans; D016867:Immunocompromised Host / Q000276:immunology; D016393:Lymphoma, B-Cell / Q000150:complications* / Q000276:immunology / Q000473:pathology*; D008297:Male; D010264:Paraplegia / Q000209:etiology; D010291:Paresis / Q000209:etiology; D018344:T-Lymphocytopenia, Idiopathic CD4-Positive / Q000150:complications* / Q000276:immunology