title: Large ependymal cyst of the cerebello-pontine angle in a child.
abstract: Most ependymal cysts occur intracerebrally, with a few cases situated in the subarachnoid space. The cerebellopontine angle is a common site for arachnoid cysts, but a very rare site for ependymal cysts. A case is described here of a large ependymal cyst in the cerebellopontine angle. A 12-year-old girl with left hearing disturbance was admitted. CT and MRI revealed a cystic tumor in the left cerebellopontine angle. At operation, we obtained a discrete thin-walled cyst which had arisen from a continuation of the choroid plexus of the lateral foramen of Luschka, which had no connection with the arachnoid. The cyst proved to be an ependymal cyst.
authors.affiliation: Department of Neurosurgery, Osaka Neurological Institute, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakase
authors.forename: H
authors.initials: H
authors.lastname: Ohnishi
authors.forename: H
authors.initials: H
authors.lastname: Touho
authors.forename: J
authors.initials: J
authors.lastname: Karasawa
mesh_terms: D002526:Cerebellar Diseases / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D002531:Cerebellum / Q000473:pathology*; D002552:Cerebral Ventricles / Q000473:pathology; D002648:Child; D003560:Cysts / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006311:Hearing Disorders / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D011149:Pons / Q000473:pathology*; D014057:Tomography, X-Ray Computed