title: Cerebral amyloid angiopathy as cause of convexity SAH in elderly.
abstract: BACKGROUND
  Spontaneous convexity SAH in the elderly has heretofore been of uncertain origin until several recent case reports have suggested cerebral amyloid angiopathy (CAA) as the etiology.
  
  
  OBJECTIVE
  To better appreciate the relationship of convexity SAH in the elderly to CAA.
  
  
  METHODS
  The case histories and MR imaging findings of 4 patients with spontaneous convexity SAH were examined.
  
  
  RESULTS
  T2*-weighted imaging at the time of symptomatic SAH demonstrated features of prior lobar hemorrhage, microbleeds, and/or superficial hemosiderosis fulfilling diagnostic criteria of CAA in all patients.
  
  
  CONCLUSIONS
  CAA may be the foremost cause of convexity SAH in the elderly.
authors.affiliation: Department of Neurology, Hartford Hospital and University of Connecticut School of Medicine, Hartford, CT 06102-5037, USA. pfinell@harthosp.org
authors.forename: Pasquale F
authors.initials: PF
authors.lastname: Finelli
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000473:pathology; D016657:Cerebral Amyloid Angiopathy / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013345:Subarachnoid Hemorrhage / Q000209:etiology* / Q000473:pathology