Unilateral variant vertebral artery with an aneurysm of the basilar tip : a case report
نویسندگان
چکیده
Intracranial aneurysms are classified in 3 groups as saccular (berry), fusiform and dissecting aneurysms, regarding their pathological appearance. Among those, saccular ones constitute 90-95% of all cases, and are found at the bifurcation site where the hemodynamic stress is highest [1]. Arterial anatomy of the posterior cranial fossa is variable. It has been already reported that unequal diameters of the vertebral arteries (VA) cause insufficiency in the vertebrobasilary circulation, which in turn results in vertebrobasilary ischemia [2]. Here, the relation between the basilar tip aneurysm and hypoplastic left vertebral artery, as well as the role of the hypoplasia in vertebrobasilar insufficiency etiology are discussed.
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