title: Huge arachnoid cyst of the occipital cerebral convexity.
abstract: A 68-year-old woman presented with a rare huge right occipital cystic lesion manifesting as progressive left hemiplegia. Cranial computed tomography revealed a 4 x 7 cm right occipital lobe thin-walled cyst with midline shift and compression of the ipsilateral ventricle. The patient underwent a single burr hole operation for cystography and delineation of the cyst anatomy, then a separate right parieto-occipital craniotomy with complete cyst evacuation, corticotomy, and ventriculostomy. The presumptive diagnosis was arachnoid cyst. The symptoms had completely resolved by 4 months after surgery with nearly normal neuroimaging appearance after 7 months. Cystography followed by craniotomy and ventriculostomy may be effective for supratentorial arachnoid cysts.
authors.affiliation: Department of Neurosurgery, Nishinomiya Kyoritsu Neurosurgical Hospital, 12-1 Imazuyamanaka-cho, Nishinomiya, Hyogo 663-8211, Japan. tucker@nk-hospital.or.jp
authors.forename: Adam
authors.initials: A
authors.lastname: Tucker
authors.forename: Hiroji
authors.initials: H
authors.lastname: Miyake
authors.forename: Takehisa
authors.initials: T
authors.lastname: Omura
authors.forename: Masao
authors.initials: M
authors.lastname: Tsuji
authors.forename: Tohru
authors.initials: T
authors.lastname: Ukita
authors.forename: Kentaro
authors.initials: K
authors.lastname: Nishihara
authors.forename: Shizuo
authors.initials: S
authors.lastname: Oi
mesh_terms: D000368:Aged; D016080:Arachnoid Cysts / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D018450:Disease Progression; D005260:Female; D006429:Hemiplegia / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D009778:Occipital Lobe / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014696:Ventriculostomy