title: Cystatin C mutation in an elderly man with sporadic amyloid angiopathy and intracerebral hemorrhage.
abstract: BACKGROUND
  Cerebral amyloid angiopathy (CAA) with intracerebral hemorrhage (ICH) occurs both sporadically and as a result of mutations in either cystatin C or the amyloid precursor protein. ICH due to cystatin C mutations typically occurs in young people of Icelandic origin.
  
  
  METHODS
  We report a case of sporadic CAA with ICH in an elderly Croatian man with a mutation in cystatin C identical to that found in Icelandic hereditary cerebral hemorrhage with amyloidosis.
  
  
  CONCLUSIONS
  This is the first case report of sporadic CAA associated with the same mutation causing hereditary cerebral hemorrhage with amyloidosis of the Icelandic type. Sporadic CAA may thus be associated with genetic mutations in some patients. The frequency of these mutations is yet to be determined.
mesh_terms: D016657:Cerebral Amyloid Angiopathy / Q000150:complications / Q000235:genetics / Q000378:metabolism*; D002543:Cerebral Hemorrhage / Q000209:etiology / Q000235:genetics / Q000378:metabolism*; D055316:Cystatin C; D015891:Cystatins / Q000235:genetics*; D005190:Family; D006801:Humans; D008297:Male; D008875:Middle Aged; D009154:Mutation
chemical_list: C525030:CST3 protein, human; D055316:Cystatin C; D015891:Cystatins