[Otoneurological manifestations of basilar dolicoectasia. A report of six cases].

Megadolichobasilar is a vascular anomaly consisting of widening and elongation of the basilar artery. It is rare and may produce otoneurological manifestations such as vertigo, sudden deafness, trigeminal neuralgia, and facial spasm or palsy. Six cases of megadolichobasilar diagnosed by magnetic resonance angiography are reported and their pathogenesis is discussed.