title: Extension of a cerebellar cystic astrocytoma into the cervical canal, demonstrated by magnetic resonance imaging.
abstract: One characteristic feature of ependymomas of the fourth ventricle is a tendency to extend through the foramina, specifically the foramina of Luschka and Magendie, the foramen magnum and the aqueduct of Sylvius. The authors report a case of pilocytic astrocytoma of the cerebellum that mimicked such extension into the upper cervical canal. This finding was revealed by magnetic resonance imaging and confirmed at surgery.
authors.affiliation: Montreal Neurological Institute and Hospital, Que.
authors.forename: F
authors.initials: F
authors.lastname: Leproux
authors.forename: D
authors.initials: D
authors.lastname: Melançon
authors.forename: C
authors.initials: C
authors.lastname: Mercier
authors.forename: R
authors.initials: R
authors.lastname: Ethier
mesh_terms: D001254:Astrocytoma / Q000175:diagnosis* / Q000473:pathology; D002528:Cerebellar Neoplasms / Q000175:diagnosis* / Q000473:pathology; D002574:Cervical Vertebrae / Q000473:pathology*; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male