title: Middle fossa arachnoid cyst and subdural hematoma: CT studies.
abstract: A patient with a history of previous head injury presented with an isodense subdural hematoma with extension into a preexisting middle fossa arachnoid cyst. The latter, suspected on the basis of findings pointing to chronic expansion of the middle fossa, was confirmed in a repeat CT study carried out after evacuation of the hematoma.
authors.affiliation: Department of Radiology, University of British Columbia, Vancouver General Hospital, Canada.
authors.forename: P L
authors.initials: PL
authors.lastname: Munk
authors.forename: W D
authors.initials: WD
authors.lastname: Robertson
authors.forename: F A
authors.initials: FA
authors.lastname: Durity
mesh_terms: D000328:Adult; D001099:Arachnoid / Q000000981:diagnostic imaging*; D001927:Brain Diseases / Q000150:complications / Q000000981:diagnostic imaging; D006259:Craniocerebral Trauma / Q000150:complications*; D003560:Cysts / Q000150:complications / Q000000981:diagnostic imaging*; D006408:Hematoma, Subdural / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed