title: [Sporadic cerebral amyloidotic angiopathy].
abstract: BACKGROUND
  Sporadic cerebral amyloid angiopathy (CAA) is a microangiopathy identified by neuropathological examination in more than 30 percent of patients over 85 years of age.
  
  
  BACKGROUND
  Boston criteria for diagnosis of CAA--related hemorrhage are as follows: "definite CAA", "Probable CAA with supporting pathology", "Probable CAA" and "Possible CAA". Clinical manifestations of CAA are either lobar, cortical, corticosubcortical or cerebellar hemorrhages associated with progressive dementia. Dementia, corresponding either to Alzheimer disease, vascular or mixed dementia, precedes hemorrhages in 25 to 40 percent of cases. Brain MRI can demonstrate microbleeding.
  
  
  CONCLUSIONS
  This review compares data regarding CAA prevalence, intracranial hemorrhages, and their risk factors in old patients. Diagnosis and preventive strategies are discussed. It would be useful to identify those affected by CAA among elderly demented patients with atrial fibrillation requiring anticoagulation therapy.
  
  
  CONCLUSIONS
  CAA is suspected in the presence of recurrent lobar or cerebellar hemorrhages, and moreover if associated with pre-existing dementia. In elderly demented patients, MRI criteria to detect CAA should be considered in order to prevent hemorrhage risk, particularly after anticoagulation therapy.
authors.affiliation: Département de Neurologie, CHU de Rouen. Luciecabrejo@hotmail.com
authors.forename: L
authors.initials: L
authors.lastname: Cabrejo
authors.forename: P
authors.initials: P
authors.lastname: Chassagne
authors.forename: J
authors.initials: J
authors.lastname: Doucet
authors.forename: A
authors.initials: A
authors.lastname: Laquerrière
authors.forename: N
authors.initials: N
authors.lastname: Puech
authors.forename: D
authors.initials: D
authors.lastname: Hannequin
mesh_terms: D000818:Animals; D001921:Brain / Q000473:pathology; D016657:Cerebral Amyloid Angiopathy / Q000175:diagnosis / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D012307:Risk Factors