title: Cerebellar hemorrhage after embolization of ruptured vertebral dissecting aneurysm proximal to PICA including parent artery.
abstract: BACKGROUND
  Some complications related to vertebral artery occlusion by endovascular technique have been reported. However, cerebellar hemorrhage after vertebral artery occlusion in subacute phase is rare. In this report, we describe a patient who showed cerebellar hemorrhage during hypertensive therapy for vasospasm after embolization of a vertebral dissecting aneurysm.
  
  
  METHODS
  A 56-year-old female with a ruptured vertebral dissecting aneurysm proximal to the posterior inferior cerebellar artery developed cerebellar hemorrhage 15 days after embolization of the vertebral artery, including the dissected site. In this patient, the preserved posterior inferior cerebellar artery fed by retrograde blood flow might have been hemodynamically stressed during hypertensive and antiplatelet therapies for subarachnoid hemorrhage, resulting in cerebellar hemorrhage.
  
  
  CONCLUSIONS
  Although cerebellar hemorrhage is not prone to occur in the nonacute stage of embolization of the vertebral artery, it should be taken into consideration that cerebellar hemorrhage may occur during hypertensive treatment.
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Tamase
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Kamide
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Kentaro
authors.initials: K
authors.lastname: Mori
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Kitamura
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shima
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Seki
authors.affiliation: Department of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama 247-8581, Japan.
authors.forename: Motohiro
authors.initials: M
authors.lastname: Nomura
keywords: Cerebellar hemorrhage; dissecting aneurysm; embolization; posterior inferior cerebellar artery; vertebral artery