(Stroke. 1995;26:1935-1940.)
© 1995 American Heart Association, Inc.
Articles |
Familial Aorto-Cervicocephalic Arterial Dissections and Congenitally Bicuspid Aortic Valve
From the Departments of Neurologic Surgery (W.I.S.) and Neurology (B.M.), Mayo Clinic, Rochester, Minn.
Background A primary arteriopathy is often implicated in the etiology of spontaneous cervicocephalic arterial dissections, but its exact nature usually remains unknown. We describe the familial occurrence of spontaneous arterial dissections and congenitally bicuspid aortic valve (BAV) and propose a common developmental defect in these families.
Summary of Report In the first family, a 63-year-old man suffered an extracranial internal carotid artery (ICA) dissection, and his 43-year-old cousin with BAV suffered an intracranial vertebral artery (VA) dissection. Two other family members had pathologically proven BAV. In the second family, a 31-year-old woman suffered bilateral extracranial ICA and VA dissections. Her father, at age 46, suffered an aortic dissection associated with cystic medial necrosis and BAV. Her paternal uncle died from an aortic dissection at age 59. In the third family, a 39-year-old woman suffered extracranial ICA and VA dissections, and her brother died at age 48 from an aortic dissection associated with a BAV.
Conclusions The familial occurrence of spontaneous arterial dissections and BAV suggests a common developmental defect. The aortic valvular cusps and the arterial media of the aortic arch and its branches are derived from neural crest cells, suggesting that a neural crest defect may be the underlying abnormality in these families.
Key Words: aorta • carotid arteries • cerebrovascular disorders • dissection • vertebral arteries
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