title: Basal encephalocele associated with hypoplasia of the internal carotid artery.
abstract: A 22-year-old woman presented with a basal encephalocele associated with hypoplasia of the internal carotid artery (ICA) manifesting as a 6-year history of decreased vision in the right eye. She underwent encephalo-arterio-synangiosis under a diagnosis of hypoplasia of the ICA at age 6 years. Magnetic resonance imaging showed the encephalocele medial to the right temporal lobe. Frontotemporal craniotomy was performed for resection of the encephalocele and repair of the defect of the skull base. The pathogeneses of these developmental anomalies were probably related to developmental failure of the embryonic primordium during the 4th and 10th weeks.
authors.affiliation: Department of Neurosurgery, University of Toyama, Faculty of Medicine, Sugitani, Toyama, Japan.
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Hasegawa
authors.forename: Nakamasa
authors.initials: N
authors.lastname: Hayashi
authors.forename: Michiya
authors.initials: M
authors.lastname: Kubo
authors.forename: Hideo
authors.initials: H
authors.lastname: Hamada
authors.forename: Naoya
authors.initials: N
authors.lastname: Kuwayama
authors.forename: Hideo
authors.initials: H
authors.lastname: Shojaku
authors.forename: Takuya
authors.initials: T
authors.lastname: Akai
authors.forename: Shunro
authors.initials: S
authors.lastname: Endo
mesh_terms: D000328:Adult; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D004677:Encephalocele / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D005260:Female; D006801:Humans