Supplementingand activating blood circulation method to treat vertebrobasilar dolichoectasia with posterior circulatory watershed infarction: a case report of two patients.

Vertebrobasilar dolichoectasia (VBD), a rare posterior circulation vascular variant disease, is an important risk factor for many acute cerebrovascular diseases. An insufficient understanding of VBD often leads to misdiagnose. Two cases of VBD that were initially diagnosed as posterior circulation watershed infarction are reported here.