Description
		
 
The right vertebral artery is small in calibre and does not appear to show any atheroma. The left 
vertebral artery and basilar artery are tortuous and contain ante-mortem thrombus. 
		 History
		
This man died at the age of 72, some four and a half hours after he became unconscious. 
He had a past history of hypertension and of a small stroke three years before.