What is the natural history of vertebrobasilar dolichoectasia?
Passero SG, Rossi S. studied the natural history of vertebrobasilar dolichoectasia and concluded that it can cause ischemic stroke, fusiform aneurysm, poor clinical outcome and mortality. In addition, the risk of stroke due to vertebrobasilar dolichoectasia is recurrent and it is related to atheroscleorosis and stroke subtype. Other factors such as intracranial arterial dolichoectasia and stenosis, non-saccular vertebrobasilar aneurysms and dolichoectasia, and dolichoectasia of intracranial arteries also contribute to the poor clinical outcome and mortality. Furthermore, Xu DS et al. studied the radiographic and clinical factors that predict poor outcomes in dolichoectatic aneurysms of the vertebrobasilar system and concluded that certain factors such as aneurysm size, presence of multiple aneurysms, and occlusion of parent vessels are associated with increased risk of poor outcome. 