RT Journal Article SR Electronic T1 Saccular aneurysms in basilar artery fenestration. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 233 OP 236 VO 8 IS 2 A1 Campos, J A1 Fox, A J A1 ViƱuela, F A1 Lylyk, P A1 Ferguson, G G A1 Drake, C G A1 Peerless, S J YR 1987 UL http://www.ajnr.org/content/8/2/233.abstract AB Of 59 cases of vertebrobasilar junction aneurysms diagnosed and treated from January 1977 to April 1986, 21 (35.5%) saccular aneurysms arose in a fenestration of the proximal basilar artery. Defects of the media at the junctures of the fenestrated segments, as well as the possible presence of turbulent flow at the vertebrobasilar junction, may explain the high incidence of vertebrobasilar aneurysms associated with proximal basilar artery fenestration.