title: Familial association of intracranial aneurysms and cervical artery dissections.
abstract: OBJECTIVE
  The familial occurrence of intracranial aneurysms and cervical artery dissections has been described in different families and supports the hypothesis that a primary arteriopathy may play a role in the pathogenesis of these disorders. Although the basis for this arteriopathy is generally not believed to be similar among cases of intracranial aneurysms and cervical artery dissections, several similarities exist in the epidemiology of these disorders and a common underlying arterial abnormality may be suspected.
  
  
  METHODS
  The medical records of all 175 patients with spontaneous dissections of the cervical arteries who were seen at the Mayo Clinic between 1970 and 1989 were reviewed to identify families in which intracranial aneurysms and cervical dissections coexisted. Three families were identified in which intracranial aneurysms and cervical artery dissections were observed among siblings. These families are described in detail.
  
  
  CONCLUSIONS
  The familial occurrence of intracranial aneurysms and cervical artery dissections within the same families provides support to the importance of a common underlying arteriopathy in the pathogenesis of both these disorders. The underlying vascular defect may, at least in some cases, be inherited.
authors.affiliation: Department of Neurologic Surgery, Mayo Clinic, Rochester, Minn.
authors.forename: W I
authors.initials: WI
authors.lastname: Schievink
authors.forename: B
authors.initials: B
authors.lastname: Mokri
authors.forename: V V
authors.initials: VV
authors.lastname: Michels
authors.forename: D G
authors.initials: DG
authors.lastname: Piepgras
mesh_terms: D000784:Aortic Dissection / Q000235:genetics*; D002340:Carotid Artery Diseases / Q000235:genetics*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000235:genetics; D009333:Neck; D010375:Pedigree; D013345:Subarachnoid Hemorrhage / Q000235:genetics